Question

Q] [AIIMS 2012] A body of mass 0.25 kg is projected with muzzle velocity 100 ms^-1 from a tank of mass 100 kg. What is the recoil velocity of the tank? ​

Answer 1

Using law of conservation

of momentum, 

Mbody×Vbody=Mtank×Vtank

we get 100×v=0.25×100⟹v=0.25m/s

Answer 2

Explanation:

Solution:

Using law of conservation of momentum, we get