Q 11-04-141JEE MainJEE Main 2022 (26 Jun, Shift 2)Easy
A batsman hits back a ball of mass $0.4\ \text{kg}$ straight in the direction of the bowler without changing its initial speed of $15\ \text{m s}^{-1}$. The impulse imparted to the ball is ______ N s.
Numerical value type. Enter your answer.
Answer: 12
The velocity reverses: $J = m(v - (-v)) = 2mv = 2\times0.4\times15 = 12\ \text{N s}$.
Solution by Sreeraj P, M.Sc Physics