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=v2



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