Laws Of Motion Question 46

Question: A body of mass 0.25 kg is projected with muzzle velocity $ 100m{{s}^{-1}} $ from a tank of mass 100 kg. What is the recoil velocity of the tank[AFMC 1996]

Options:

A) $ 5m{{s}^{-1}} $

B) $ 25m{{s}^{-1}} $

C) $ 0.5m{{s}^{-1}} $

D) $ 0.25m{{s}^{-1}} $

Show Answer

Answer:

Correct Answer: D

Solution:

Using law of conservation of momentum, we get $ 100\times v=0.25\times 100 $

therefore $ v=0.25m/s $



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