A ball strikes directly upon another ball at rest and is itself reduced to rest by the impact. If half of the initial `K.E.` is lost in collision, find the value of `e`.

A ball impinges directly upon another ball at rest and is itself brought to rest by the impact. If half of initial kinetic energy is destroyed in the collision. The cocfficient of restitution is,

A ball impinges directly on another ball at rest. The first ball is brought to rest by the impact. If half of the kinetic energy is lost by the impact, the value of coefficient of restitution is

A ball collides directly with another ball at rest and is brought to rest by the impact. If half of the initial kinetic energy is lost in the impact, then the coefficient of restitution is