What is elastic collision. Find out the velocities of bodies after collision. Explain different cases also.
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An elastic collision is an encounter between two bodies in which the total kinetic energy of the two bodies remains the same. In an ideal, perfectly elastic collision, there is no net conversion of kinetic energy into other forms such as heat, noise, or potential energy.
In the case of macroscopic bodies, perfectly elastic collisions are an ideal never fully realized, but approximated by the interactions of objects such as billiard balls.
When considering energies, possible rotational energy before and/or after a collision may also play a role.
Consider particles 1 and 2 with masses m1, m2, and velocities u1, u2 before collision, v1, v2 after collision.
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