A v vs.t graph is drawn for a ball moving in one direction.The graph starts at the origin and at t = 5 s the acceleration of the ball is zero.We know that at t = 5 s,
A)the slope of the curve is non-zero.
B)the velocity of the ball is not changing.
C)the curve is not crossing the time axis.
D)the curve is at v = 0,t = 0.

Question

Quizplus · Accepted Answer

At t=5 s, the acceleration is zero, which means the velocity is constant. Therefore, the slope of the curve (which represents the acceleration) is zero, and the velocity is not changing. So, the correct choice is B. The other choices are not necessarily true. For example, the curve might cross the time axis or have a non-zero slope at t=5 s. Also, we do not know if the curve is at v=0, t=0, as there is no information given about the initial velocity of the ball.

A V VsT Graph Is Drawn for a Ball Moving in One