Physics

Problem

Two identical smooth spheres collide head-on in one dimension. One sphere moves with speed

u

and the other is at rest. If the coefficient of restitution is

e

, what fraction of the initial kinetic energy of the system is lost during the collision? a)

1-e

\dfrac{1}{2}(1-e^{2})

\dfrac{1}{2}(1+e^{2})

1-e^{2}