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A ball of weight 0.1 kg coming with spee...

A ball of weight 0.1 kg coming with speed 30 m / s strikes with a bat and returns in opposite direction with speed 40 m / s , then the impulse is (Taking final velocity as positive)

A

`-0.1xx(40)-0.1xx(30)`

B

`0.1xx(40)-0.1xx(-30)`

C

`0.1xx(40)xx0.1(-30)`

D

`0.1xx(40)-0.1xx(20)`

Text Solution

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The correct Answer is:
B
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