Question

A ball is dropped from the roof of a building. Points A, B, C, and D in the diagram below represent positions of the ball as it falls. At which position will the ball have the greatest kinetic energy?

Answer 1

Answer:

C. C

Explanation:

The ball will have its greatest kinetic energy just before it touches the ground which is at point C.

Kinetic energy of a body is the energy due to the motion of the body. As a body moves and its speed increases as a result of acceleration, then the kinetic energy will increase more.

As the body starts from rest, at point A, through B and C, the velocity increases drastically due the pull of the earth.

So, point C will show the greatest velocity and hence the most kinetic energy by the body.