Question

In the given graph, the velocity of the body at A is zero.

• A. zero
• B. unity

Answer 1

The correct option is A

zero

The slope of a displacement-time graph gives us the velocity. The slope at any point in a curve can be found by drawing a tangent on it. In the figure, a tangent has been drawn at point A.
$\text{Slope}=\frac{\text{Change in y-coordinate}}{\text{Change in x-coordinate}}$
At point A, clearly, there is no change in the y-coordinate. Hence, the slope is zero. This implies that the velocity at point A is zero.