what are the two most straightforward things that can be done on the spacecraft side to close a link with negative margin

The initial speed given to the rock was approximately 100.96 m/s.

The time it takes for the rock to fall from the cliff to the water can be found using the kinematic equation,

h = 1/2gt^2

where h is the height of the cliff (34 m), g is the acceleration due to gravity (-9.81 m/s^2), and t is the time it takes for the rock to fall. Solving for t,

t = sqrt(2h/g) = sqrt(2 * 34 / 9.81) = 2.15 s

The horizontal velocity of the rock can be found using the equation,

v = d/t

where d is the horizontal distance the rock travels (unknown) and t is the time it takes for the rock to hit the water (2.78 s). We can use the speed of sound in air (343 m/s) to find the distance d, since the time it takes for the sound of the splash to reach the player is equal to the time it takes for the rock to travel that distance plus the time it takes for the sound to travel that same distance,

2.78 s = t + d/343

Solving for d,

d = (2.78 - t) * 343 = (2.78 - 2.15) * 343 = 217.11 m

Now that we know the horizontal distance the rock travels, we can find its initial velocity using the equation,

v = d/t = 217.11/2.15 = 100.96 m/s

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Answer:

Part A:

The speed of a wave on the string can be calculated using the formula:

v = fλ

where f is the frequency and λ is the wavelength. In this case, we only know the frequency of the fundamental mode, so we need to use another formula that relates the wavelength and the length of the string:

λn = 2L/n

where n is the mode number (n = 1 for the fundamental mode), and λn is the wavelength of the nth mode. Substituting this expression for λ into the first formula, we get:

v = fn × 2L/n

Substituting the given values, we get:

v = (294 Hz) × 2(0.69 m)/(1)

v = 406 m/s

Therefore, the speed of a wave or pulse on the string is 406 m/s.

Part B:

The frequencies of the other modes of vibration can be calculated using the formula:

fn = nv/2L

where n is the mode number, v is the speed of the wave on the string (which we found in Part A), and L is the length of the string. Substituting the given values, we get:

f2 = (2 × 406 m/s)/(2 × 0.69 m) = 589 Hz

f3 = (3 × 406 m/s)/(2 × 0.69 m) = 883 Hz

f4 = (4 × 406 m/s)/(2 × 0.69 m) = 1178 Hz

Therefore, the first three other frequencies at which the string can vibrate are 589 Hz, 883 Hz, and 1178 Hz.

The correct option is A, the si unit of energy and how is it related to units of mass, distance, and time is joule.

The joule is a unit of measurement used to express energy or work done. It is named after the English physicist James Prescott Joule, who studied the relationship between heat and mechanical work in the mid-19th century. One joule is equal to the amount of energy needed to perform work of one newton-meter.

This means that if a force of one newton is applied over a distance of one meter, one joule of work is done. The joule is used to measure a wide variety of energies, including potential energy, kinetic energy, and thermal energy. It is also used to express the amount of work done by machines, such as engines and generators.

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Complete Question: -

What is the SI unit of energy and how is it related to units of mass, distance, and time?

a. joule

b. watt

c. kilo

d. Newton

The focal length of the mirror is  8.57 cm.

The focal length is the distance between the mirror and the focal point.

For a convex lens the focal point is that point at which parallel rays will be focused after passing thru the lens.

For a convex lens, which is thicker at the center and thinner at the edges, the focal point is the point where parallel rays of light that pass through the lens converge.

When parallel rays of light pass through a convex lens, they are refracted, or bent, towards the center of the lens due to the lens's shape and refractive index.

As a result, these rays of light converge at a point on the opposite side of the lens from where the light entered, and this point is known as the focal point of the lens.

The distance between the convex lens and its focal point is called the focal length. It is usually denoted by the symbol 'f' and is an important parameter in lens design and optical systems.

The focal length of a convex lens determines how much the lens will bend or refract light and how much the light will converge at the focal point.

A lens with a shorter focal length will bend light more and converge it at a closer focal point, while a lens with a longer focal length will bend light less and converge it at a farther focal point.

The focal length of the concave spherical mirror can be calculated using the formula: 1/f = (1/p) + (1/q),

where p is the distance from the object to the mirror (13.2 cm) and q is the distance from the image to the mirror (14.0 cm).

Therefore, the focal length of the mirror is 8.57 cm.

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The initial velocity of a 500g ball kicked at a 45-degree angle to the horizontal and reaching a height of 12m can be calculated using the kinematic equation.

The equation of kinematics is a set of equations that are used to describe the motion of objects. They relate to displacement, velocity, acceleration, and time. Kinematic equations are divided into two categories, depending on the object's acceleration: zero acceleration and non-zero acceleration.

The kinematic equation for the object in motion with uniform acceleration is as follows:v^2 = u^2 + 2asWhere: v = final velocity u = initial velocity a = acceleration s = displacement. To calculate the initial velocity of the ball, we can rearrange the equation above to obtain:u^2 = v^2 - 2as From the given, a = -9.8 m/s² (negative acceleration indicates that the ball is decelerating or moving upward) s = 12m v = 0 (the final velocity is zero because the ball has stopped rising and is about to start falling). We'll use these values to calculate the initial velocity of the ball.u² = (0)² - 2(-9.8)(12)u² = 235.2u = sqrt(235.2)u = 15.33 m/s.

Therefore, the initial velocity of the ball is approximately 15.33 m/s.

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Therefore, the speed of the satellite must be 7.471 km/s to stay in this circular orbit 785 km above earth's surface.

A rocket releases a satellite into a circular orbit 785 km above the earth's surface. To stay in this orbit, the satellite must be going at a certain speed. To calculate this speed:

`v = sqrt(GM/r)`

where: v is the velocity of the satellite,

GM is the universal gravitational constant (6.67 x 10^-11 Nm^2/kg^2) multiplied by the mass of the earth,

r is the distance between the center of the earth and the satellite (785 km + radius of the earth)

Using the given values:

v = sqrt(6.67 x 10^-11 * 5.97 x 10^24 / (785 + 6,371))v

  = sqrt(3.99 x 10^14 / 7,156)v

  = sqrt(55,825,822)

The velocity of the satellite must be approximately 7,471 m/s or 7.471 km/s to stay in this orbit.

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Perspiration dries on a person's skin. The correct answer is option B.

Vaporization is the process by which a liquid changes into a gas or vapor, and perspiration is a liquid that is secreted by sweat glands in the skin. When perspiration dries on a person's skin, it is evaporating and changing into a gas due to the heat energy from the person's body. This is an example of the physical change of state from a liquid to a gas through vaporization. The other options do not involve a change of state from a liquid to a gas, and instead involve other processes such as condensation. Hence option B  is the correct answer .

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The following statement is true about this circuit: option (A) The equivalent resistance of the circuit is the algebraic sum of all resistors.

This means that the total resistance of the circuit is equal to the sum of the individual resistances of each resistor. The total voltage on this combination is an algebraic sum of voltages on each resistor. This means that the total voltage of the circuit is equal to the sum of the voltages across each individual resistor.

The currents through all resistors are the same. This means that the total current that flows through the circuit is the same as the current that flows through each individual resistor.

To summarize, in a series circuit the equivalent resistance, total voltage, and current are equal to the algebraic sum of all the individual resistances, voltages, and currents respectively.  

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All of the given options produce an acceleration that are force pairs suggested in Question 5.

When a skier uses her ski poles to start moving downhill then the ski poles exert a backward force on the ground while the ground exerts a forward force on poles and produces acceleration.

Similarly in case B. when a boat propeller spins rapidly in the water the propeller exert a backward force on the water while the water exerts a forward force on propeller and produces acceleration.

In case C. when a baseball player hits a pitched ball with a bat the bat exert a backward force on the ball while the ball exerts a force away from bat and produces acceleration.

In case D. when a party balloon contains rapidly moving helium atoms the helium atoms exert an outward force on the balloon while the balloon exerts an inward force on helium atoms and produces acceleration.

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The major difference between P- and S-waves is the mode of propagation; P-waves are compressional, meaning they cause the material that they travel through to compress and expand as the wave passes, while S-waves are shear waves, meaning they cause the material that they travel through to move side to side. P-waves are the fastest seismic waves and can travel through both solid and liquid material.

In summary, the major difference between P and S waves is their mode of propagation, and we use their behavior as they travel through different layers of the Earth to determine the composition and structure of the Earth's interior.

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The actual mechanical advantage of the system would be 0.573.

The AMA (Actual Mechanical Advantage) of a pulley system is defined as the ratio of the force applied to the system to the force required to lift the load. In this case, the force applied is the pulling force on the rope and the force required is the weight of the carton:

AMA = force applied / force required

To calculate the force required, we need to use the weight formula:

force required = weight = mass x gravity

where mass is the mass of the carton and gravity is the acceleration due to gravity, which is approximately 9.81 m/s^2.

mass = weight / gravity = 225 N / 9.81 m/s^2 ≈ 22.9 kg

force required = 22.9 kg x 9.81 m/s^2 ≈ 225 N

Now we can calculate the AMA:

AMA = force applied / force required = 129 N / 225 N = 0.573

Therefore, the AMA of the pulley system is approximately 0.573.

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The speed of waves on the slinky is 2.42 m/s.

The speed of a wave is the distance it travels in a given amount of time.

The speed of waves on the slinky can be calculated using the equation:

v=fλ

where v is the wave speed, f is the frequency, and λ is the wavelength).

Using the given values of f=4.4 Hz and λ=0.55 m, we can calculate the speed of the wave to be 2.42 m/s.

So, the wave is traveling at a speed of 2.42 m/s, which means that it will travel 2.42 meters in one second.

The frequency of the wave is 4.4 Hz, which means that the wave completes one cycle in 0.23 seconds. Since the wave is traveling at a speed of 2.42 m/s, this means that it will take 0.23 seconds for the wave to complete one cycle.

Therefore, the speed of waves on the slinky traveling with a frequency of 4.4 Hz and having a wavelength of 0.55m  is 2.42 m/s.

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If the colours at the base of the leaves appear distortion, there may be a number of causes including poor lighting, the age of the leaves, a lack of nutrients, a disease or pest infestation, or even a genetic mutation in the plant.

Dispersion is the distribution of white light throughout its entire spectrum of wavelengths. The dispersion of sunlight into a continuous range of colours causes rainbows, which are created by a combination of refraction and reflection.

The prism separates the white light into its individual colors, which are red, orange, yellow, green, blue, and violet.

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Digital sampling machines are not an example of mechanical action.

Mechanical action refers to the physical movement of mechanical components to produce a sound or perform a specific function. This can include a wide range of actions, such as the striking of hammers on strings in a piano, the rotation of tonewheels in a Hammond organ, or the movement of valves in a trumpet.

Mechanical action can also be found in other types of machinery and equipment, and tools such as engines, gears, and levers, where physical movement is used to perform a specific task or function.

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The solar system's many small bodies, such as asteroids, comets, and small moons, are unlikely as potential homes to life due to the fact that these celestial objects have too little gravity to support an atmosphere and most have no liquid water.

This is because their small sizes and masses do not allow for enough gravitational force to retain an atmosphere, and the extreme temperatures make liquid water impossible. Additionally, many small bodies lack the necessary components needed to support life, such as organic compounds or the right amount of radiation.

Asteroids, comets, and small moons typically have a low density, which means they are composed of rocks, dust, or ice, which would not support life. Moreover, these celestial objects have highly variable rotational periods and orbits, which would result in chaotic and extremely variable temperatures, making it difficult for any life forms to survive.

These celestial objects are also very small in comparison to other bodies in the solar system, meaning they receive far less sunlight than larger bodies. This is important for life to thrive because it requires energy from the sun to grow, reproduce, and obtain nutrients. The lack of energy from the sun, combined with the lack of liquid water and a protective atmosphere, makes these small bodies unlikely candidates for supporting life.

Therefore, it is unlikely to consider the celestial objects as potential homes because of the lack of sustainable living conditions like gravity, water, oxygen, and other organic substances.

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The given statement is false. An isotonic contraction is a type of muscular contraction in which the muscle shortens while maintaining the same level of tension. This means that while the length of the muscle changes, the tension remains constant.

What are isotonic contractions?When a muscle contracts and causes a change in the length of the muscle and the muscle's tension remains constant, this is known as an isotonic contraction. The tension exerted by the muscle remains constant in isotonic contractions, but the length of the muscle changes. Isotonic contractions can be split into two types: eccentric and concentric contractions. The amount of force exerted by a muscle is determined by its ability to contract concentrically, while the ability to withstand loads while elongating is determined by its ability to contract eccentrically. Isometric contractions occur when the muscle's strength is not strong enough to overcome an opposing force. For example, pushing against a wall or attempting to lift an object that is too heavy for you. In both cases, the muscles are producing tension, but there is no movement because the opposing force is too great for the muscles to overcome. Therefore, the given statement is false.

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Answer:

The kinetic energy is more than half of its maximum energy

When two waves, in phase and with the same wavelength, interact, the result is a wave with an amplitude that is the sum of the amplitudes of the initial two waves.

Thus, the correct answer is a wave with an amplitude that is the sum of the amplitudes of the initial two waves (D).

А wаve is а disturbаnce thаt trаvels through а medium, trаnsferring energy from one point to аnother without trаnsferring the mаteriаl medium itself. Wаves cаn be of vаrious types, such аs sound wаves, electromаgnetic wаves, аnd more.

When two wаves interаct, there аre three possible results: reinforcement, interference, аnd а combinаtion of the two. When two wаves interfere with one аnother, their displаcements аdd up to form а resultаnt wаve. The crest of one wаve is in line with the crest of the other wаve, resulting in constructive interference, which results in а wаve with аn аmplitude thаt is the sum of the аmplitudes of the initiаl two wаves.

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Hence, 127.2 m3/s per second is the required water flow rate from the dam's crest.

A international unit system (SI) defines the metre per second as the speed of the a body covering a metre in one second, which is measured in terms of the both speed (a scalar number) and speed (a vector quantity with direction and magnitude). m/s, m/s1, m/s, or ms are the SI unit symbols.

Distance times time is the same for all objects, including cars, when calculating speed and distance. So, a math becomes (60 x 5280) (60 x 60) ≈ 88 meters per second when trying to figure out how fast an automobile is traveling at 60 miles per hour.

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A stone is dropped into a well. the sound of the splash is heard 3.00 s later. The depth of the well is: 510 m

A stone is dropped into a well and the sound of the splash is heard 3.00 s later. To calculate the depth of the well, we can use the equation :
Depth = (Speed of sound x Time taken)/2

where the Speed of sound is 340 m/s. Therefore, the depth of the well is calculated to be 510 m.


To explain this in more detail, the equation states that the depth of the well is calculated by multiplying the speed of sound by the time taken for the sound to reach the surface of the well. This is then divided by two as the sound wave needs to travel to the bottom of the well and then back up to the surface.

In this case, the speed of sound is 340 m/s and the time taken for the sound to reach the surface is 3.00 s, so the depth of the well is 510 m.

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The gravitational force between two masses is inversely proportional to the square of the distance between them. This means that the two masses must be much closer together for the force to be 1.03 N. The masses 0.510 kg and 0.108 kg have to be 0.285 m apart in order for the gravitational force between them to have a magnitude of 1.03 N.

The equation for gravitational force is F=G*m1*m2/d^2, where G is the gravitational constant, m1 and m2 are the two masses, and d is the distance between them.

Assuming G=6.67*10^(-11) Nm^2/kg^2, m1=0.510 kg, and m2=0.108 kg, then d=0.285 m. This is the minimum distance between the two masses for the gravitational force between them to have a magnitude of 1.03 N.

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The average mass of the skiers is 66.0 kg. The power output of the motor is 4.70 kw. The maximum speed at which the skiers can be towed is 4.21 m/s.

Since there are 10 skiers, the total mass is:

M = 10m = 10(66.0 kg) = 660.0 kg

The force exerted by the tow rope is:

F = Mg sin([tex]\theta[/tex])

F = (660.0 kg)(9.81 m/s^2) sin(8.5 degrees)

F = 1117.9 N

Now, we can use the equation P = Fv to solve for the maximum speed at which the skiers can be towed:

v = P/F

v = (4.70 kW)/(1117.9 N)

v = 4.21 m/s

Speed is a fundamental concept in physics and is used to describe the motion of objects. It is a relative quantity and depends on the observer's frame of reference. For example, the speed of a car traveling at 60 miles per hour relative to the ground is different from the speed of the same car traveling at 0 miles per hour relative to the driver.

Speed is also related to other physical quantities such as velocity, acceleration, and momentum. Velocity is the speed of an object in a particular direction, while acceleration is the rate of change of velocity over time. Momentum is the product of an object's mass and velocity, and it determines how difficult it is to stop the object's motion.

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To apply the mechanics of sound wave production from a guitar string to construct a simple model for human vocal cords, we need to consider the vibration and resonance of both. The vibration of a guitar string and the vocal cords is similar because they both produce sound by vibrating back and forth.

The mechanics of sound wave production are the generation and propagation of sound waves through space. When a guitar string vibrates, it generates sound waves that travel through the air and reach our ears. The frequency and amplitude of the sound waves determine the pitch and volume of the sound.

Take a long, thin piece of material, such as a rubber band or a strip of plastic.2. Stretch it taut between two points, such as two pencils or two pegs.3. Pluck the string with your finger and observe the vibration.4. Vary the tension and length of the string to produce different pitches.

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You can get yourself moving to the right on a slick surface with no traction by throwing the oranges to the left.

One possible way to get moving to the right on a slick surface with no traction is to throw the oranges to the left in a series of quick and forceful motions.

According to Newton's third law of motion, every action has an equal and opposite reaction. As you throw the oranges to the left, your body will experience a reactive force to the right, which can cause you to move in that direction.

By repeating this throwing motion with the oranges, you can continue to generate a reactive force that propels you in the desired direction.

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A tiny neutrally buoyant electronic stress probe is launched into the inlet pipe of a water pump and transmits 2000 strain readings per second as it passes through the pump. This is a lagrangian measurement.

Lagrangian measurement is a technique used in fluid dynamics to track the motion of particles or objects within a fluid. The Lagrangian approach follows the motion of individual fluid particles, while the Eulerian approach observes the flow of fluid at fixed points in space. In Lagrangian measurement, the position, velocity, and acceleration of each particle is tracked over time.

Lagrangian measurements can provide information on the mixing and dispersion of pollutants in the environment, the transport of sediment in rivers, and the movement of microorganisms in oceans. Lagrangian measurements can be conducted using a variety of techniques, such as tracer particles, acoustic or optical sensors, and satellite imagery. These measurements have applications in a range of fields, including meteorology, oceanography, and environmental science.

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To complete the given sentences explaining why the transverse pulse traveling on a rope held by two people reflects in the opposite orientation each time it reaches a person order of the words used is third law, the same, oppose, increase.

When a transverse wave pulse reaches a fixed end of the rope, the displacement of the rope end exerts a force on the object that is keeping the end fixed (in this case, a person). By Newton's third law, the person must exert a force of the same magnitude in oppose direction; otherwise, the end of the rope would not remain stationary but would accelerate in the direction of the force due to the wave disturbance. Because this force acts to increase the force of the incoming wave pulse, it initiates an outgoing wave pulse that is inverted with respect to the incoming wave pulse.

When a transverse pulse traveling on a rope held by two people reaches one of the people, the pulse is reflected in the opposite orientation. This happens because of the interaction between the pulse and the person holding the rope.

By Newton's third law, the displacement of the rope end exerts a force on the person that is equal in magnitude but opposite in direction. If the person did not exert an equal and opposite force, the end of the rope would not remain stationary but would instead accelerate in the direction of the force due to the wave disturbance.

The force exerted by the person opposes the force of the incoming wave pulse, initiating an outgoing wave pulse that is inverted with respect to the incoming wave pulse. This happens due to the conservation of energy and momentum, which are described by Newton's first and second laws. The outgoing pulse has a smaller amplitude than the incoming pulse because some energy is lost in the reflection process.

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The major factors in explaining why some Jovian moons are more geologically active than terrestrial worlds of similar or larger sizes are the effects of tidal heating and the presence of a large planetary body providing gravitational forces.

The main factors geologically active than terrestrial worlds are also because:

Overall the combination of tidal forces, volatile materials, lack of atmospheric erosion, and different composition can all contribute to the greater geological activity seen in some Jovian moons compared to terrestrial worlds

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It will take the car 876 minutes to travel 733 miles at a constant speed of 45 mph.

To find out how many minutes it will take a car to travel 733 miles if the car is moving at a constant speed of 45 mph, we can use the formula:

Time = Distance / Speed

Time is in hours

Distance is in miles

Speed is in miles per hour

So,Time = Distance / Speed

Time = 733 miles / 45 mph

Let's simplify this,Time = (733/45) hours

Since we want the answer in minutes, we will multiply the answer by 60.Time = (733/45) * 60

Time = 876 minutes

Therefore, it will take the car 876 minutes to travel 733 miles at a constant speed of 45 mph.

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The distance between the rocket and the observer is increasing at a rate of about 186.6 m/s.

We can use the Pythagorean theorem to relate the distance between the rocket and the observer to the height of the rocket above the ground. Let d be the distance between the observer and the launch pad, and let h be the height of the rocket above the ground. Then,

d^2 = h^2 + 3^2 (1)

We can take the derivative of both sides of equation (1) with respect to time to get,

2d (dd/dt) = 2h (dh/dt) (2)

where (dd/dt) is the rate of change of distance between the observer and the rocket, and (dh/dt) is the rate of change of height of the rocket.

At the moment when the rocket is 4 km above the ground, h = 4 km = 4000 m, and (dh/dt) = 300 m/s.

Substituting these values into equation (2) and solving for (dd/dt),

dd/dt = (h/d) x (dh/dt) = (4000 m / √(4000^2 + 3000^2) m) x (300 m/s)

≈ 186.6 m/s

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The amount of work done by a person lifting a 6.7-kg object from the bottom of a well at a constant speed of 2.5 m/s for 9 s is 1517.25 Joules.

The work done is determined using the equation below;

W = FdW = mgd

Where,W = Work done by the person,m = mass of object = 6.7 kg,g = acceleration due to gravity = 9.8 md = distance lifted by the person = ?We know that F = m(g + a) where a is the acceleration of the object that was lifted. The object is lifted at a constant velocity and so the acceleration of the object is zero. Hence,

F = mgF = 6.7 × 9.8F = 65.66 N

We can now determine the distance d that was lifted using the equation below;

d = vt

Where,v = constant velocity = 2.5 m/s.t = time taken = 9 s

Substituting the values; d = 2.5 × 9d = 22.5 m

Now we can determine the work done;

W = FdW = 65.66 × 22.5W = 1472.85 Joules (3 decimal places)

The work done by the person lifting a 6.7-kg object from the bottom of a well at a constant speed of 2.5 m/s for 9 s is 1517.25 Joules (2 decimal places)Answer: 1517.25 Joules.

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