Question

A body of mass `0.25` kg is projected with muzzle velocity `100ms^(-1)` from a tank of mass 100 kg. What is the recoil velocity of the tank
A. `5 ms^(-1)`
B. `25 ms^(-1)`
C. `0.5 ms^(-1)`
D. `0.25 ms^(-1)`

Answer 1

Correct Answer - D
`Using law of conservation of momentum, we get
`100 x v = 0.25 xx 100`
`rArr v=0.25 ms^(-1)`