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A cricket ball of mass 160g is moving ho...

A cricket ball of mass `160g` is moving horizontally directly towards a batsman. Its speed just before it hits the bat is `30m//s`. It leaves the bat at `40 m//s` at `90^(@)` to its original direction. Find the magnitude of the impulse (in N`-`s) imparted to the ball.

A

`4.8`

B

`8`

C

`6.4`

D

`10`

Text Solution

Verified by Experts

The correct Answer is:
B
Ans.(2)
|impulse| `=`
`DeltaP=m|Deltavec(v)|=(160)/(1000)sqrt([(30)^(2)+(40)^(2)])=8Ns`
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