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The potential energy of projectile of a ...

The potential energy of projectile of a projectile at its maximum height is equal to its kinetic energy there. If the velocity of projection is `20 ms^(-1)`, its time of flight is `(g = 10 ms^(-2))`

A

2s

B

`2sqrt(2)s`

C

`(1)/(2)s`

D

`(1)/(sqrt(2))s`

Text Solution

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The correct Answer is:
B
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