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A body projected up reaches a point A in...

A body projected up reaches a point A in its path at the end of 4th second and reaches the ground after 5 seconds from the start. The height of A above the ground is `(g=10 "m/s"^2)`

A

19.6 m

B

30.6 m

C

11 m

D

20 m

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The correct Answer is:
D
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