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
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
Question ID - 100238 | SaraNextGen Top Answer
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
|
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 |
1 Answer
127 votes
Answer Key / Explanation : (c) -
(c)
Time taken to fall through 45 m =
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m/s
Distance travelled in the fourth second=distance travelled in 1 s after rebounding 
127 votes
Answer Link
127