A rubber ball is dropped from a height of 
on a planet where the acceleration due to gravity is not known. On bouncing, it rises to
. The ball loses its velocity on bouncing by a factor of
a)
16/25
b)
2/5
c)
3/5
d)
9/25
A rubber ball is dropped from a height of on a planet where the acceleration due to gravity is not known. On bouncing, it rises to . The ball loses its velocity on bouncing by a factor of
a)
16/25
b)
2/5
c)
3/5
d)
9/25
Question ID - 50688 | SaraNextGen Top Answer
A rubber ball is dropped from a height of on a planet where the acceleration due to gravity is not known. On bouncing, it rises to . The ball loses its velocity on bouncing by a factor of
a)
16/25
b)
2/5
c)
3/5
d)
9/25
|
A rubber ball is dropped from a height of |
|||||||
|
a) |
16/25 |
b) |
2/5 |
c) |
3/5 |
d) |
9/25 |
1 Answer
127 votes
Answer Key / Explanation : (b) -
(b)
If ball falls from height 
and bounces back up to height 
then 
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Similarly if the velocity of ball before and after collision are 
and 
respectively then 
So 
fractional loss in velocity 
127 votes
Answer Link
127