question_answer

A rubber ball is dropped from a height of 5m on a planet where the acceleration due gravity is not known. On bouncing, it rises 1.8 m. The ball loses its velocity on bouncing by a factor of:

A)  \[\frac{2}{5}\]                  

B)         \[\frac{3}{5}\]

C)  \[\frac{9}{25}\]               

D)          \[\frac{16}{25}\]