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A stone is projected from the top of a t...

A stone is projected from the top of a tower with velocity `20ms^(-1)` making an angle `30^(@)` with the horizontal. If the total time of flight is 5s and `g=10ms^(-2)`

A

the height of the tower is 75m

B

the maximum height of the stone from the ground is 80m

C

both of the above are true

D

none of the above is true

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The correct Answer is:
C
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