Work Energy And Power Question 119
Question: A body of mass 5 kg moving with a velocity 10m/s collides with another body of the mass 20 kg at, rest and comes to rest. The velocity of the second body due to collision is [Pb. PMT 1999; KCET 2001]
Options:
A) 2.5 m/s
B) 5 m/s
C) 7.5 m/s
D) 10 m/s
Show Answer
Answer:
Correct Answer: A
Solution:
Momentum conservation $ 5\times 10+20\times 0=5\times 0+20\times v $
therefore $ v=2.5m/s $
