First slide

Newton's laws of motion

Question

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, the impulse imparted to the ball is

Moderate

A

1.5 Ns
B

3.6 Ns
C

7.2 Ns
D

10.2 Ns

Solution

Change in momentum $= mΔv$
Given,m = 0.15 kg,
$Δp = 0.15 \times 12 - (- 0.15 \times 12)$
$Δp = 3.6 N s$
In the direction from the batsman to the bowler.

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