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A cricket ball of mass 150 g has an init...

A cricket ball of mass 150 g has an initial velocity `vec u = ( 3hati + 4hatj) ms^-1` and a finaal velocity `vec v = - (3hati + 4hattj) ms^-1` after being hit. The change in momentum (final momentum-initial momentum) is (in `kg ms^-1`)

A

zero

B

`-(0.45 hati + 0.6 hatj)`

C

`-(0.9 hati + 1.2 hatj)`

D

`-5(hati + hatj)`.

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