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Astone is projected from the ground with...

Astone is projected from the ground with a velocity of 20 m/s at angle `30^(@)` with the horizontal. After one second it clears a wall then find height of the wall. `(g=10 ms^(-2))`

A

10m

B

2 m

C

5 m

D

15 m

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The correct Answer is:
C
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