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 $
