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Two balls are dropped to the ground from...

Two balls are dropped to the ground from different heights. One ball is dropped 2 s after the other but they both strike the ground at the same time. If the first ball takes 5 s to reach the ground, then the difference in initial heights is (Take `"g = 10 m s"^(-2)`)

A

20 m

B

80 m

C

170 m

D

40 m

Text Solution

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The correct Answer is:
B
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