Work Energy and Power - Result Question 67

70. Two identical balls A and B moving with velocities +0.5m/s and 0.3m/s respectively, collide head on elastically. The velocities of the balls A and B after collision, will be, respectively

[1991]

(a) +0.5m/s and +0.3m/s

(b) 0.3m/s and +0.5m/s

(c) +0.3m/s and 0.5m/s

(d) 0.5m/s and +0.3m/s

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Answer:

Correct Answer: 70. (b)

Solution:

  1. (b) When the identical balls collide head-on, their velocities are exchanged.


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