A ball is dropped from a height A on a floor of coefficient of restitution. The total distance covered by the ball just before second hit is
A)\[\text{S}0\]
B)\[\text{Si}\text{F}\]
C)\[\text{P}\text{Cl}\]
D)\[O_{2}^{+}\]
Correct Answer:
C
Solution :
Total distance travelled by the ball before its second hit is \[F=\frac{k}{v}\] \[v=\sqrt{\frac{2kt}{m}}\] \[F=\frac{k}{\sqrt{\frac{2kt}{m}}}or\,F\propto {{t}^{\frac{-1}{2}}}\]