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Q.

A body is projected horizontally from the top of a hill with a velocity of 9.8m/s . What time elapses before the vertical velocity is twice the horizontal velocity

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a

0.5 sec

b

1 sec

c

1.5 sec

d

2 sec

answer is C.

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Detailed Solution

u=9.8m/s

vy=2vx

gt=2u

9.8t=2(9.8)

t=2s

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