Question

State which of the following situations are possible and give an example for each of these

(i) An object with a constant acceleration but zero velocity
(ii) An object moving in certain direction with acceleration in perpendicular direction​

Answer 1

Answer:

(a) Possible

When a ball is just released from a height, then it is being acted upon by a constant acceleration equal to the acceleration due to gravity i.e. 9.8 m/s2 but its initial velocity is zero.

Concept Note - An object with a constant acceleration but with zero velocity is possible.

(b) Possible

When a car is moving in a circular track, its acceleration is perpendicular to its direction of motion at each instant.

Concept Note - An object moving in a certain direction with an acceleration in the perpendicular direction is also possible.