Work Energy And Power Question 108
Question: A space craft of mass M is moving with velocity V and suddenly explodes into two pieces. A part of it of mass m becomes at rest, then the velocity of other part will be [RPMT 1999]
Options:
A) $ \frac{MV}{M-m} $
B) $ \frac{MV}{M+m} $
C) $ \frac{mV}{M-m} $
D) $ \frac{(M+m)V}{m} $
Show Answer
Answer:
Correct Answer: A
Solution:
After explosion m mass comes at rest and let Rest $ (M-m) $ mass moves with velocity v. By the law of conservation of momentum $ MV=(M-m)v $
therefore $ v=\frac{MV}{(M-m)} $
