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A body projected from the ground reaches...

A body projected from the ground reaches a point 'X' in its path after 3 seconds and from there it reaches the ground after further 6 seconds. The vertical distance of the point 'X' from the ground is (acceleration due to gravity = `10 ms^-2`)

A

30 m

B

60 m

C

80 m

D

90 m

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