For an investigation, a student measures the speed of a cart as it rolls down a ramp. The student then records data in the table shown above. Which of these best explains the student’s data?



A.
The speed of the cart decreases as the cart rolls down the ramp because of friction between the cart and the ramp.

B.
The speed of the cart increases as the cart rolls down the ramp because the force acting on the cart is greater than the force of gravity.

C.
The speed of the cart increases as the cart rolls down the ramp because the forces acting on the cart are unbalanced.

D.
The speed of the cart decreases as the cart rolls down the ramp because the forces acting on the cart are balanced.

Answer:

Because 1 change in one factor can effect the other and that one can effect the other and so on and so on.

So, let's just say water were to stop flowing, how would the oceans take that? How would precipitation take it?

Answer:

Peach and Apple will take the same time as the gravitional pull acting on both of them is equal.

height of peach=initial velocity*time+1/2*gravitional pull*(time^2)

1.8=0*time+1/2*9.8*time^2

1.8=0+1/2*9.8*time^2

1.8=1/2*9.8*time^2

3.6/9.8=time^2

taaking value of gravitional pull approx to 10

3.6/10=time^2

0.36=time^2

0.6=time

therefore, the time taken is 0.6sec

Explanation:

The time it takes the peach to reach the ground is 0.61 sec

From the question,

We are to determine how long it would take the peach to reach the ground.

From one of the equations of kinematics for free falling objects,

We have that

[tex]H = ut + \frac{1}{2}gt^{2}[/tex]

Where

H is the height

u is the initial velocity,

t is the time

and g is the acceleration due to gravity ( g = 9.8 m/s²)

Since the object is dropped with no velocity, then the initial velocity is 0 m/s

From the given information

H = 1.8 m

u = 0 m/s

Putting the parameters into the formula,

We get

[tex]1.8 = 0(t) + \frac{1}{2}(9.8)t^{2}[/tex]

This becomes

[tex]1.8 = 0 + 4.9t^{2}[/tex]

[tex]1.8 = 4.9t^{2}[/tex]

Then,

[tex]t^{2} = \frac{1.8}{4.9}[/tex]

[tex]t^{2} = 0.367347[/tex]

∴ [tex]t =\sqrt{0.367347}[/tex]

t = 0.60609 sec

t ≅ 0.61 sec

Hence, the time it takes the peach to reach the ground is 0.61 sec

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Answer:

2 [tex]m/s^{2}[/tex]

Explanation:

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

= [tex]\frac{20 - 10}{5}[/tex]

= [tex]\frac{10}{5}[/tex]

= 2 [tex]m/s^{2}[/tex]

Answer:14.8

Explanation:

Trust me

The distance will be = 14.85 m

A region around a charged particle or object within which a force would be exerted on other charged particles or objects.

given :

Charge (q)= 2.45*[tex]10^{-6}[/tex] C

Electric field (EF) =  100 N/C

to find = ? distance (r)

Electric field = 1/4π∈o * (q/[tex]r^{2}[/tex])

         100      = 9 * [tex]10^{9}[/tex] *  ( 2.45*[tex]10^{-6}[/tex] / [tex]r^{2}[/tex])

          [tex]r^{2}[/tex] = 220.5

          r= [tex]\sqrt{220.5}[/tex]

          r = 14.85 m

The distance will be = 14.85 m

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Answer:

v0=72 km/h:3.6=20 m/s

a=F/m=10/2=5m/s^2

t=(vf-v0)/a

t= (30-20)/5=10/5=2s

Answer:

mass

gravitational pull

Answer: 3.26 s

Explanation:

Given

The ball is projected upward with a velocity  [tex]u=16\ m/s[/tex]

Using the equation of motion

[tex]s=ut+\frac{1}{2}at^2[/tex]

Here, displacement is zero as the ball returns to its initial position

[tex]\Rightarrow 0=16\times t-0.5\times g\times t^2\\\Rightarrow t(16-0.5\times 9.8\times t)=0\\\text{i.e.}\ t=\dfrac{16}{4.9}=3.26\ s[/tex]

the velocity of the ball at any instant is given by

[tex]v=u+at\\v=16-9.8t[/tex]

Answer:

we can't balance this because there are no atoms of oxygen in the product side

Answer:

An electromagnet is the device through which runs current and it creates a magnetic field.

Answer:

Resultant Force= F1 - F2

F1= 100N

F2= 85N

Resultant Force= 100N - 85N

R.F = 15N

Workdone= Force x Displacement

Force = 15N

Displacement = 20m

= 15N X 20m

=300Nm or Joules

Answer:

are used by geneticists to determine the probability of different offspring genotypes.

Answer:

Elliptical galaxies, such as M87, are the oldest and roundest galaxies in the universe. Astronomers think these galaxies are formed in major mergers—dramatic collisions between galaxies that result in one massive galaxy being entirely consumed by another.

Explanation:

hope this helps...

have a good day...

Answer:

discrimination: prejudice towards a person/group based on their race, sex, age, and/or sexual orientation

Explanation:

People of color face discrimination because of the color of their skin.

Answer:

Discrimination is treatment or consideration of, or making a distinction of or against a person or thing based on the group, class or category to which that person is perceived to belong or rather.

Answer:

D

Explanation:

The ballon will repel

Answer:

1) C. Energy

2) A. Joule

3) D. Joule

4) B. Potential

5) A. Greater

6) C. Largest

7) A. Speed and mass

8) A. Kinetic

9) A. Kinetic

10) D. Height and mass

Answer:

The main purpose of the turbine in the turbojet engine is to Drive the compressor.

Explanation:

Answer:

40,000,000 ⇒ scientific notation

= 4 × [tex]10^{7}[/tex]

Answer:

3d shape is the shape of solid

Answer:

The Light was reflected, b.

Explanation:

If the flashlight was pointed at the mirror, it was reflected because it did not stop on the mirror or go through the mirror or reflect in different ways.

When ANYTHING moves slower, its kinetic energy decreases.

Answer:

1/f =1/v+1/u

Explanation:

Answer:

child i dont even know the answer for this question

Explanation:

Answer:

It's a transverse wave.

Answer:

Greatest position of the ball are z