Question

1. below is a graph of a balls motion. which of the following gives the best interpretation of the ball’s motion? a. the ball moves along a flat surface. then it moves forward down a hill, and then finally stops. b. the ball doesn’t move at first. then it moves forward down a hill and finally stops. c. the ball is moving at constant velocity. then it slows down and stops. d. the ball doesn’t move at first. then it moves backwards and then finally stops. e. the ball moves along a flat area, moves backwards down a hill and then it keeps moving.

Explanation:

In the position - time graph, from 0 - 5 seconds, the position is constant, indicating no motion. From 5 - 10 seconds, the position decreases linearly with time, meaning the ball is moving in the negative direction (backwards) at a constant rate, and then stops at 10 seconds.

Answer:

d. The ball doesn’t move at first. Then it moves backwards and then finally stops.