Question

A ball of mass $m$ moving with a speed v makes a head on collision with an identical ball at rest. The kinetic energy after collision of the balls is three fourth of the original kinetic energy. The coefficient of restitution is

• A. $\frac{1}{2}$
• B. $\frac{1}{3}$
• C. $\frac{1}{\sqrt{2}}$
• D. $\frac{1}{\sqrt{3}}$

Answer 1

Answer: (C)

$\frac{1}{\sqrt{2}}$

Answer 2