Question

Two identical bodies of mass 1 kg each are moving towards each other with velocities of 5 m/s and 3 m/s, respectively. They collide elastically. What will be the velocity of the body initially moving at 5 m/s after the collision?

• A. -3 m/s
• B. 3 m/s
• C. -5 m/s
• D. 5 m/s

Hint:

For elastic collisions of identical masses, the bodies exchange velocities. Use conservation of momentum and energy to solve.