Directions: The picture shows the motion of a ball dropped from rest from the top of a two-story building. Use the picture to answer any questions that follow.

Question

At which point does the ball have zero kinetic energy and zero potential energy?

Group of answer choices

1

2

3

4

Answer 1

In this scenario, the ball is dropped from rest, so it initially has potential energy but no kinetic energy. As it falls, its potential energy decreases while its kinetic energy increases until it reaches the bottom of its fall.

The ball will have zero kinetic energy when it is at rest (not moving), and it will have zero potential energy at the lowest point of its fall, which is when it has hit the ground.

Assuming that the options are representing different points in the motion of the ball (1 being the top of the building and 4 being the ground), the answer is Point 4 where it would have zero kinetic energy (if we consider it as the moment after it impacts the ground and comes to rest) and zero potential energy (at ground level).