Questions
After striking the floor, a certain ball rebounds (4/5)th of height from which it has fallen. Then the total distance
that it travels before coming to rest, If it is gently dropped from a height of 120 m is
detailed solution
Correct option is C
Initially the ball falls from a height of 120m. After striking the floor, it rebounds and goes to a height of 45×120m Now, it falls from a height of 45×120m and after rebounding goes to a height of 4545120 m. This process is continued till the ball comes to rest Hence, the total distance travelled is 120+12045+120452+.....=1201-45=600mSimilar Questions
Sum of an infinite G.P. is 2 and sum of their cubes is 24, then 5th term of the G.P. is
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