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| 1. |
A hunter has a machine gun that can fire `50g` bullet with a velocity of `150m//s`. A `60kg` tiger springs at him with a velocity of `10m//s`. How many bullets must the hunter fire per second into the tiger in order to stop him in the track? |
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Answer» Let `n` bullets be fired per second. To stop the tiger in his track, rate of change of momentum of bullets= rate of change of momentum of tiger `n(50xx10^(-3))xx150=60xx10` `n=(60xx10)/(50xx10^(-3)xx150)=80`. |
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