Work Energy and Power - Result Question 67
70. Two identical balls A and B moving with velocities $+0.5 m / s$ and $-0.3 m / s$ respectively, collide head on elastically. The velocities of the balls $A$ and $B$ after collision, will be, respectively
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(a) $+0.5 m / s$ and $+0.3 m / s$
(b) $-0.3 m / s$ and $+0.5 m / s$
(c) $+0.3 m / s$ and $0.5 m / s$
(d) $-0.5 m / s$ and $+0.3 m / s$
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Answer:
Correct Answer: 70. (b)
Solution:
- (b) When the identical balls collide head-on, their velocities are exchanged.
