Question

Body A of mass 4m moving with speed u collides with another body B of mass 2m, at rest. The collision is head on and elastic in nature. After the collision the fraction of energy lost by the colliding body A is:

• A. $\frac19$
• B. $\frac89$
• C. $\frac49$
• D. $\frac59$

Answer 1

Answer: (B)

$\frac89$

Answer 2

The correct option is (B) :$\frac89$