Question

Figure (3-Q2) shows the displacement-time graph of a particle moving on the X-axis.

(a) the particle is continuously going in positive x direction
(b) the particle is at rest
(c) the velocity increases up to a time t0, and then becomes constant
(d) the particle moves at a constant velocity up to a time t0, and then stops.

Answer 1

(d) the particle moves at a constant velocity up to a time t0, and then stops.

Explanation:

Initially the displacement increases proportionately with time up to time to, so it is a constant velocity. After this instant the displacement is stagnant because the graph is parallel to time axis, it shows that particle has stopped.