What happens to the total energy after an elastic collision?

In an elastic collision, the total energy of molecules before and after collision remains the same. There is an exchange of energy between the colliding molecules. Their individual energies may also change but the sum of their energies remains constant.

Elastic collision

An elastic collision is a collision in which there is no net loss in kinetic energy in the system as a result of the collision. Both momentum and kinetic energy are conserved quantities inelastic collisions. This collision is perfectly elastic because no energy has been lost.

  • When a ball at a billiard table hits another ball, it is an example of elastic collision.
  • The Elastic Collision formula of momentum is given by:

m1u1 + m2u2 = m1v1 + m2v2

m1 = Mass of 1st body

m2 = Mass of 2nd body

u1 =Initial velocity of 1st body

u2 = Initial velocity of the second body

v1 = Final velocity of the first body

v2 = Final velocity of the second body

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