Question

A ball is dropped from a height of 45m from the ground. The ball repeatedly bounces on the ground and eventually stops.If the ball looses 1/3of its speed each time it hits the ground. Then find for how long does the ball stops moving. in seconds....(Take g=10m/s).... BRAINLIEST ANSWER IS ON THE LINE

Answer 1

5m

20m

15m

10m

Answer :

C

Solution :

Time taken to fall through 45m=2×4510−−−−−−√=3s