Question

If the displacement - time graph of a particle is parallel to (a) displacement axis (b) the time axis, what will be the velocity of the particle?

Answer 1

Answer:

(a) If a graph is parallel to displacement axis, velocity cannot be defined as the change is time is zero.

(b) If a graph is parallel to time axis, velocity is zero as displacement is constant.

Answer 2

Zero

That means if the distance-time graph of the object is parallel to the time axis then the particle has not covered any displacement with change in time. i.e. the particle is at rest. So the change of displacement of the particle with respect to time is zero so the velocity of the particle will be zero.