Question

Discuss the directions of force and of displacement in each of the following cases.

(i) Pushing a stalled vehicle. 

(ii) Catching the ball which your friend has thrown towards you. 

(iii) Tying a stone to one end of a string and swinging it round and round by the other end of the string. 

(iv) Walking up and down a staircase; climbing a tree. 

(v) Stopping a moving car by applying brakes.

Answer 1

(i) Force and displacement are in the same direction. 

(ii) Force and displacement are in the opposite direction. 

(iii) Force and displacement are perpendicular to each other. 

(iv) Force and displacement are in the opposite direction. 

(v) Force and displacement are in the opposite direction.