Question

A measure of inelasticity in a head on collision is the “ Coefficient of Restitution , shown by “e” where : e = ?′?―?′???―??where v’(A) – v’(B) is the relative velocity of the two objects after the collision and v(B) – v(A) is the relative velocity before it.

a) Show that e = 1 for perfectly elastic collision and e = 0 for completely inelastic collision

.b) A simple method for measuring the coefficient of restitution for an object colliding with a very hard surface like steel is to drop the object onto a heavy steel plate from a known height such as h and measuring the max. height , h’ reached after collision.

c) Draw a simple schematics showing h and h’

Answer 1