Figure shows the position-time graph of a particle moving on the X--axis. Which of these option correctly describes the particle 's motion?

Options

A. the particle is continuously going in positive x direction
B. the particle is at rest
C. the velocity increases up to a time and then becomes constant
D. the particle moves at a constant velocity up to a time and then stops

Answer

D

Explanation

Slope of x-t graph gives velocity . Slope is +ve constant till ` t_0` and then it is zero