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Velocity of a particle of mass 2kg varie...

Velocity of a particle of mass 2kg varies with time t according to the equation `vec(v)=(2thati+4hatj) m//s`. Here t is in seconds. Find the impulse imparted to the particle in the time interval from t=0 to t=2s.

A

`2hati m//s`

B

`4hati m//s`

C

`8hati m//s`

D

`6hatim//s`

Text Solution

Verified by Experts

The correct Answer is:
C
`v_(t=0)=4h` m/sec mass m=2kg
`v_(t=2)=2xx2j+4j=4i+4j`
`J=P_(f)-P_(i)=2[4i+4j-4j]=8iN-s`
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