Work Energy And Power Ques 69

69. The co-efficient of restitution e for a perfectly elastic collision is

[1988]

(a) $1$

(b) $0$

(c) $\infty$

(d) $-1$

Show Answer

Answer:

Correct Answer: 69.(a)

Solution:

  1. (a) $e=|v_1-v_2| /|u_1-u_2|$ which is $1$ for a perfectly elastic collision.
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