Question

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 body is subjected to acceleration from O to A
• C. The velocity increases uniformly
• D. The velocity of the body at A is zero

Answer 1

The correct option is D The velocity of the body at A is zero

$a.$ The slope of distance time graph gives us the velocity and the slope is constantly changing.
So, the velocity is not constant.

$b.$ From $O$ to $A$ as slope is decreasing therefore, velocity is decreasing.
So, option $B$ is not correct.

$c.$ Since the velocity is decreasing from $O$ to $A$ so it will be retardation.
So, option $C$ is not correct

$d.$ From the graph
$\frac{ds}{dt}$ at $A=0$
Therefore,
Velocity, $V_A=0$
Hence, option $D$ is correct