Work Energy And Power Question 172
Question: A body of mass $ m_1 $ is moving with a velocity V. It collides with another stationary body of mass $ m_2. $ They get embedded. At the point of collision, the velocity of the system [DCE 1999, 2001]
Options:
A) Increases
B) Decreases but does not become zero
C) Remains same
D) Become zero
Show Answer
Answer:
Correct Answer: B
Solution:
By momentum conservation before and after collision. $ m_1V+m_2\times 0=(m_1+m_2)v $
therefore $ v=\frac{m_1}{m_1+m_2}V $ i.e. Velocity of system is less than V.
