In which one of the following cases is the displacement of the object directly proportional to the elapsed time? A)a ball rolls with constant velocity B)a ball at rest is given a constant acceleration C)a ball rolling with velocity v_o is given a constant acceleration D)a bead falling through oil experiences a decreasing acceleration E)a rocket fired from the earth's surface experiences an increasing acceleration

Question

Quizplus · Accepted Answer

When a ball rolls with constant velocity, its displacement is directly proportional to the elapsed time. This is because the velocity is constant, so the displacement increases at a constant rate over time.

In Which One of the Following Cases Is the Displacement