# CBSE Class 11: Work, Energy & Power - Perfectly Elastic Collision

May 19, 2015 16:37 IST

In this video we will learn about the perfectly elastic collision.

• For perfectly elastic collision:
a) The coefficient of restitution is 1
b) It follows the law of conservation of Linear momentum
c) The kinetic energy remains conserved
d) Total energy also remains conserved
• The relation between velocity of approach and the velocity of separation for perfectly elastic collision, this approach is used to solve numerical like:
a) How much the energy will be transferred from one body to another body during the perfectly elastic collision?
b) What percentage of kinetic energy is retained by the first body
• If the masses of bodies are identical, then the velocities will interchange.
a) v1 = u2 and v2 = u1

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