a school bus has stopped to allow children to get off the bus which graph shows the motion of the bus?​

Answer:

It stays and remains at rest

Explanation:

When no forces acts on an object or all the forces on it are balanced, the body stays at rest or remains stationary.

This is based on the Newton's law of inertia which states that "an object will remain in a state of uniform motion or at rest unless an external force acts on it".

If the forces acting on a body is balanced, the object will perpetually remain and keep at rest

Answer:

ch 46umm nym m m m   m hj hj hj

Explanation:

Answer:

If density is greater, the object sinks. Saturn is mainly composed of the lightest two gases known, hydrogen and helium. It is the only planet in our solar system whose density is less than water

Explanation:

Planet density are uneven they all have different density.

Mass per unit of volume is referred to as density. Although the Latin letter D can also be used, the sign most frequently used for density is. Mass divided by volume is how density is mathematically defined:

If density is greater, the object sinks. Saturn is mainly composed of the lightest two gases known, hydrogen and helium. It is the only planet in our solar system whose density is less than water

Planet density are uneven they all have different density.

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Answer:

your question dosent make sense?

Explanation:

Answer:

The time is always in the x axis.

Explanation:

Answer:

53775

Explanation:

ke= 0.5mv(2)

    = 0.5 x 478 x 15(2)

    53775

Answer:

in the opposite direction of the force

Answer:

The force applied moves the object in the direction of the force. Suppose if the force is applied to the moving object in that case object moves in the direction of the stronger force. Thus, according to the given question the applied force moves the object in its direction.

that means it's the 2nd option( in the opposite direction of the force

Answer:

0.49 s

Explanation:

i'm in middle school sorry if i'm wrong.

The time taken for the iPod to fall from the top table is 0.5 s.

The given parameters;

The time taken for the iPod to fall from the top table is calculated as follows;

[tex]h = v_0t + \frac{1}{2} gt^2\\\\h = 0 + \frac{1}{2} gt^2\\\\h = \frac{1}{2} gt^2\\\\gt^2 = 2h\\\\t^2 = \frac{2h}{g} \\\\t = \sqrt{ \frac{2h}{g} } \\\\t = \sqrt{ \frac{2\times 1.2 }{9.8} }\\\\t = 0.5 \ s[/tex]

Thus, the time taken for the iPod to fall from the top table is 0.5 s.

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Answer:

h = 2.22 m

Explanation:

Using the international system, we know that the gravity of the earth is 9.8 m / s².

then, we have as data:

Use formula:

Replace:

Joules descompose:

Solve the multiply of mass and gravity:

Multiply the units. Knowing that kg * m/s² = N, so:

Simplify the Newtons (N), and it divides:

What is the child’s height above the ground?

The child's height above the ground is 2.22 meters.

Answer:

Nutrients for animals

Explanation:

Producers are organisms that produce their food, they do not need to depend on other animals for their food. They possess photosynthetic properties that enable them to produce their food.

These set of organisms are located at the bottom of the food chain, they can convert components like water, sunlight and air into carbohydrate through the unique process of photosynthesis.

Without these producers, the food chain would not exist as they form the base and foundation of the food chain, some lower animals depend on them as their source of food.

Answer:

Source: National Bureau of Standards Wall Chart. 1 inch, = 25 millimetres. 1 foot, = 0.3 metre. 1 yard, = 0.9 metre. 1 mile ...

Explanation:Source: National Bureau of Standards Wall Chart. 1 inch, = 25 millimetres. 1 foot, = 0.3 metre. 1 yard, = 0.9 metre. 1 mile ...

Answer:

mv=11700

m=900

v=11700/900=13m/s in west

Answer:

The height or the mass

Explanation:

The one variable that can change the potential energy of a box on the floor is either the height or the mass of the box.

Potential energy is the energy due to the position of a body.

Mathematically;

  Potential energy  = mass x acceleration due to gravity x height

Therefore, if the mass of the box is changed, the potential energy changes also.

If the position of the box is changed by raising it up, the potential energy changes

Answer:

It's violet........

Explanation:

This was right for me.

The color of visible light that has a shorter wavelength than blue light is Red. The correct option is A.

The electromagnetic spectrum consists of the range of all types of EM radiation. Radiation is packet of energy that travels and spreads out. It has radio waves, infrared waves and visible light waves, ultraviolet rays and microwaves.

They possess high energy even to penetrate deep within the material. electromagnetic spectrum ranges from longer wavelength and less frequency to shorter wavelength and high frequency.

The light with higher wavelength is Blue and the shorter wavelength is Red and the rest of all spectrum colors are in between.

Thus, the correct option is A.

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Answer:

6m/s²

Explanation:

Given parameters:

Initial velocity  = 4m/s

Time  = 3s

Final velocity  = 22m/s

Unknown:

Average acceleration  = ?

Solution:

Acceleration is the rate of change of velocity with time taken.

    Acceleration  = [tex]\frac{Final velocity - Initial velocity }{Time}[/tex]  

Acceleration  = [tex]\frac{22 - 4}{3}[/tex]    = 6m/s²

Answer:

it is believed to be shattered moons, asteroids, and comets, so C

Explanation:

Answer:

false

Explanation:

the answer is false bc for a non-polar bond to form the electrons are shared equally...

Answer:

Amorphous solids are composed of atoms or molecules that are in no particular order. Each particle is in a particular spot, but the particles are in no organized pattern. Examples include rubber and wax. Crystalline solids have a very orderly, three-dimensional arrangement of atoms or molecules

Explanation:

Answer:

Explanation:

Total mass of child and car = 50 + 120 = 170 kg .

initial velocity u = 4.5 m/s

initial momentum = mass x velocity = 170 x 4.5 = 765 kg m/s

final velocity = - 4.5 m/s [ - ve is due to reversal of direction ]

final momentum = - 765 kg m/s

change in momentum = final momentum - initial momentum

= - 765 - ( 765 )

= - 1530 kg m/s .

Momentum of a body is the product of mass and the velocity of the body.

The magnitude of the change in the momentum of the child in the bumper car is 1530 kg-m/s.

The change in momentum of a object is the difference of the final momentum to the initial momentum.

Given information-

The mass of the child is 50 kg.

The mass of the bumper car is 120 kg.

The initial velocity of the bumper car is 4.5 m/s.

Momentum of a body is the product of mass and the velocity of the body. The initial momentum of the child in the bumper car is,

[tex]p_i=(m_c+m_b)u[/tex]

Here, [tex]m_c[/tex] is the mass of child and [tex]m_b[/tex] is the mass of the bumper car. Also [tex]u[/tex] is the initial velocity,

[tex]p_i=(50+120)\times4.5\\p_i=765[/tex]

Thus the initial momentum of the child in the bumper car is 765 kg-m/s.

When the bumper car head-on into the wall of the ride then it rebounds at the speed. Thus the final momentum will be opposite in the direction. Thus final momentum is,

[tex]p_f=-p_i\\p_f=-765[/tex]

As the change in momentum of bumper car is the difference of the its final momentum to the initial momentum. thus,

[tex]\Delta p=pf-pi\\\Delta p=-765-765\\\Delta p=-1530[/tex]

Hence the magnitude of the change in the momentum of the child in the bumper car is 1530 kg-m/s.

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Answer:

[tex]sln \\ given \\ velocity \:(v) = 45ms {}^{ - } \\ mass \: of \: car \: (m) = 1120kg \\ kinetic \: enegy(k.e) = x \\ \\ k.e = \frac{1}{2} MV {}^{2} \\ k.e = \frac{1}{2} \times 1120 \times 45 \\ k.e = 25200j[/tex]

the car has kenotic energy is 2500J

The car will , have the kinetic energy of 1134 kJ. The kinetic energy is found as the product of half of mass and the square of  velocity.

The energy of the body by the virtue of its motion is known as the kinetic energy of the body. It is defined as the product of half of mass and square of the velocity.

The given data in the problem is;

A car traveling with a velocity,v= 45 m/s

The mass is, m= 1120 kg.

The kinetic energy is found as;

[tex]\rm KE = \frac{1}{2} mv^2 \\\\\ \rm KE = \frac{1}{2} 1120 (45)^2 \\\\\ \rm KE = 1134 \ kJ[/tex]

Hence, the car will , have the kinetic energy of 1134 kJ.

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Answer:

Explanation:

Yes, the atoms in a salt do follow a pattern knows as crystalline pattern or crystalline structure. It means it has an ordered arrangement of atoms or ions. As salt is an ionic compound of Sodium and Chlorine, it is formed through ionic bond. This pattern keeps on repeating for each molecule of NaCl

Answer:

yes they do crystalline pattern as well as othe ionic compounds.

Answer:

25N

Explanation:

Given parameters:

Potential energy expended  = 500J

Height  = 20m

Unknown:

The force used = ?

Solution:

To solve this problem, we use the expression below:

       Potential energy  = Force applied x height

         500  = Force applied  x 20

     Force applied  = 25N

Answer:

thaYeah, I kinda dont have an answer for you either... sorry -__-

Explanation:

Answer:

0.08 sin 3nt +

metre. Then calculate-

a time period

(d) Time period

(

Minitial phase

wõisplacement

7

(c) Displacement from mean position at t=

36

sec.

Explanation:

thats the answer

CAR 1

Momentum = Mass/Velocity

M = 2100/20

M = 105 m/s^2

CAR 2

Momentum = Mass/Velocity

M = 2100/30

M = 70 m/s^2

Answer: 5.5 m/s

Explanation:

5.5 is the answer for edge :)

Answer:

GPE= h a m

GPE= (2)(9.8)(5)

GPE=98 J