A ball is dropped from a height of 45 m from the ground. The coefficient of restitution between the ball and the ground is 2/3. What is the distance travelled by the ball in 4th second of its motion. Assume negligible time is spent in rebounding. Let |
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a) |
5 m |
b) |
20 m |
c) |
15 m |
d) |
10 m |

A ball is dropped from a height of 45 m from the ground. The coefficient of restitution between the ball and the ground is 2/3. What is the distance travelled by the ball in 4th second of its motion. Assume negligible time is spent in rebounding. Let |
|||||||

a) |
5 m |
b) |
20 m |
c) |
15 m |
d) |
10 m |

1 Answer

127 votes

**(c)**

Time taken to fall through 45 m =

m/s

Distance travelled in the fourth second=distance travelled in 1 s after rebounding

127 votes

127