[" A disc of mass "5kg" and kept "],[" floating horizontally in mid air "],[" by firing "10" bullets per second "],[" vertically up.If the mass of "],[" each bullet is "50gm" and bullets "],[" rebounded with same speed,"],[" the speed of each bullet is "],[m/" sec "(g=10m/sec^(2))]

A machine gun fires n bullets per second with speed u, and mass of each bullet is m. If bullets hit a wall and rebounds with same speed, then force acting on the wall is

A disc of mass 100 g is kept floating horizontally in air by firing bullets, each of mass 5 g with the same velocity at the same rate of 10 bullets per second. The bullets rebound with the same speed in opposite direction. Find the velocity of each bullet at the time of impact.

A disc of mass 10 g is kept floating horizontal in the air by firing bullets, each of mass 5g, with the same velocity at the same rate of 10 bullets per second. The bullets rebound with the same speed in positive direction . The velocity of each bullet at the time of impact is (Take g = 9.8 ms^(-2))

A machine gun fires n bullets per second each of mass m . If the speed of each bullet is v, then the force of recoil is

A disc of mass 10 gm is kept horizontally in air by firing bullets of mass 5 g each at the rate of 10//s. If the bullets rebound with same speed. The velocity with which the bullets are fired is -

A machine gun fires 240 bullets per minute. If the mass of each bullet is 10 g and the velocity of the bullets is 600 ms^(-1) , then find power (in kW) of the gun.

A gun of mass kg 10 fires 4 bullets per second. The mass of each bullet is 20 g and the velocity of the bullet when it leaves the gun is 300ms^(-1) . The force required to hold the gun while firing is

A machine gun fires 420 bullets per minute. The velocity of each bullet is 300 ms^(-1) and the mass of each bullet is 1 gm . The power of the machine gun is