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A stone falls freely rest. The distance ...

A stone falls freely rest. The distance covered by it in the last second is equal to the distance covered by it in the first 2 s. The time taken by the stone to reach the ground is

A

5 s

B

12 s

C

15 s

D

8 s

Text Solution

Verified by Experts

The correct Answer is:
A
`S_(t)th=u+at-(1)/(2)a`
`rArr 0+10 t-5=(1)/(2)xx10xx(3)^(2) rArr t=5 s`
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