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A hiker stands on the edge of a cliff 49...

A hiker stands on the edge of a cliff `490 m` above the ground and throwns a stone horiozontally with an initial speed of `15ms^(-1)` neglecting air resistance.The time taken by the stone to reach the ground in seconds is `(g=9.8ms^(2))`

A

5

B

10

C

1

D

5

Text Solution

Verified by Experts

The correct Answer is:
B
`t=sqrt((2h)/g)`
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