A ball rolls in a straight line without friction across the horizontal floor of a descending elevator. As the elevator comes to a stop, which of the following happens to the ball?
A)It accelerates.
B)It decelerates.
C)It comes to a stop.
D)It continues its horizontal motion unchanged.

Question

Quizplus · Accepted Answer

The ball continues its horizontal motion unchanged because there is no friction acting on it, and the horizontal motion is independent of the vertical motion of the elevator.

A Ball Rolls in a Straight Line Without Friction Across