In the previous problem (3) , the magnitude of the momentum transferred during the hit is

Options

A. zero
B. `0.75 kg -ms^(-1)`
C. `1.5 kg ms^(-1)`
D. `14 kg ms^(-1)`

Answer

B

Explanation

(b) By previous solution `Deltap=-(0.9hati+1.2hatj)`
Magnitude =`|Deltap|=sqrt((0.9)^(2)+(1.2)^(2))`
`=sqrt(0.81+1.44)=1.5 kg ms^(-1)`