A tennis ball hits the floor with a speed \(v\) at an angle \(\theta\) with the normal to the floor. If the collision is inelastic and the co-efficient of restitution is \(\varepsilon\), what will be the angle of reflection ?
(A) \(\tan ^{-1}\left(\frac{\tan \theta}{\varepsilon}\right)\)
(B) \(\sin ^{-1}\left(\frac{\sin \theta}{\varepsilon}\right)\)
(C) \(\theta \varepsilon\)
(D) \(\theta \frac{2 \varepsilon}{\varepsilon+1}\)
Ans: (A)
