Work Energy And Power Question 312
Question: A ball of mass m moving with velocity V makes a head-on elastic collision with a ball of the same mass moving with velocity 2V towards it. Taking direction of V, the positive velocities of the two balls after collision are
Options:
A)
B) 2V and
C) V and
D)
Show Answer
Answer:
Correct Answer: D
Solution:
[d] Initial velocities of balls are
respectively, and we know that for given condition velocities get interchanged after collision .
So the velocities of two balls after collision are
