At time t second, a particle of mass 3kg has position vector vecr metre, where vecr = 3t hati -4cos t hatj . The impulse of the force during the time interval 0 le t le pi/2 .

At time t second, a particle of mass 3kg has position vector vecr metr

1.	At time t second, a particle of mass 3kg has position vector vecr metre, where vecr = 3t hati -4cos t hatj . The impulse of the force during the time interval 0 le t le pi/2 .
Answer» `12 hatj Ns` `9hati Ns` `4 hatj Ns` `14 hatj Ns` ANSWER :A