A cart was allowed to roll down a ramp from rest. It reached the bottom of the ramp with a speed of 25 cm/s. A student could conclude that the cart -

a. gained mass
b. accelerated down the ramp
c. lost energy
d. moved at a constant speed

accelerated down the ramp

Explanation:

It can be concluded that the cart accelerated down the ramp is the correct choice.

Acceleration is the rate of change of velocity with time.

We see that as time increases, the velocity of the car also increase.

 Initially, the car is at rest with a velocity of 0cm/s. With the passage of time, as it slides down the ramp, the velocity increases to 25cm/s.

Since acceleration is the rate of change of velocity with time, it is glaring that the acceleration of the body greatly increased as it moves down the ramp

e

explanation:

there is no change in the electric potential energy as it is in rest on both conditions.

answer: i'm not sure which is which for i get confused on it all the time but i can tell you that the answer lies with the convex and concave devices. i hope this you. have a good day and best of luck to you!

explanation: