A batsman hits back a ball straight in the direction of the bowler without changing its initial speed of `12 ms^(-1)` . If the mass of the ball is 0.15 kg , determine the impulse imparted to the ball . (Assume linear motion of the ball).

Explanation

Given, m=0.15 kg, `v=12ms^(-1)`, `u=-12ms^(-1)`
Change in momentum,
`p_(2)-p_(1)=m(v-u)=0.15[12-(-12)]=0.15xx24`
`p_(2)-p_(1)=3.60 kg ms^(-1)`
Impulse, `I=p_(2)-p_(1)implies I=3.6 Ns`