A machine gun can fire bullets of `50` grams at a Speed of `2000 m s^(-1)`, the man holding the gun can exert an average force of `200 N` against the gun. Calculate the maximum number of bullets which he can fire per minute.

Explanation

We have force `"mn"u` ltbr where `w=m `of bullet, `u =` speed ofbullet,
`=` number of bullets per unit time.
`:. F=mnu`
or `200=50/1000xx2000xxn`
Hence, number of bullets fired per minute
`=60xx2=120`