Work Energy And Power Question 158

Question: In the above question, if another body is at rest, then velocity of the compound body after collision is

Options:

A) v/2

B) 2v

C) v

D) Zero

Show Answer

Answer:

Correct Answer: A

Solution:

If initially second body is at rest then Initial momentum = $ mv $

Final momentum = $ 2mV$

By conservation of momentum $ 2mV=mv $
therefore $ V=\frac{v}{2} $



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