Laws Of Motion Question 253
Question: A body of mass m collides against a wall with a velocity v and rebounds with the same speed. Its change of momentum is [Kerala PMT 2004]
Options:
A) 2 mv
B) mv
C) ? mv
D) Zero
Show Answer
Answer:
Correct Answer: A
Solution:
$ \Delta p=p _{i}-p _{f}=mv-(-mv)=2mv $
