Q.
The graph of displacement-time for a body travelling in a straight line is given. We can conclude that
A) The velocity is constant
B) The velocity increases uniformly.
C) The body is subjected to acceleration from $O$ to $A$.
D) The velocity of the body at $A$ is zero.
Explanation
(d) At the point $A$, the tangent to the curve is parallel to time axis. So, velocity at $A$ is zero. But acceleration is not zero. Note that the displacement corresponding to the point $A$ is not zero.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.