Question

Which of the following options is correct for the object having a straight line motion represented by the graph shown in figure?

• A. The object moves with constantly increasing velocity from O to A and then it moves with constant velocity.
• B. Velocity of the object increases uniformly.
• C. Average velocity is zero.
• D. The graph shown is impossible.

Answer 1

The correct option is C Average velocity is zero.

Let,

Total Displacement from reference point o, $=D$

Total Time for Displacement $D$, $=T$

Average velocity, reciprocal of total displacement total time.

$v_{av}=\frac{D}{T}$

Because,

In diagram, total displacement $D=0$

Average velocity, $v_{av}=\frac{D}{T}=\frac{0}{T}=0$

Hence, average velocity is zero.