Question

(a) Define impulse. State its S.I. unit? 

 (b) State and prove impulse momentum theorem?

Answer 1

(a) Force which are exerted over a short time intervals are called impulsive forces.

Impulse I=F×t

Unit – NS 

Impulse is a vector quantity directed along the average force vectorFav

(b) Impulse of a force is equal to the change in momentum of the body. According to Newton’s second law