Question

For perfectly elastic bodies the value of coefficient of restitution is

Answer 1

The coefficient of restitution (COR) is the ratio of the final to initial relative velocity between two objects after they collide. It normally ranges from 0 to 1where 1 would be a perfectly elastic collision.

Answer 2

for the perfecctly black body the value of restitution is 1 because there is no deformation and kinetic energy is conserved