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

The potential energy of a projectile at its maximum height is equal to

1.	The potential energy of a projectile at its maximum height is equal to its kinetic energy there. If the velocity of projectile is 20ms^(-1), its time of flight is ""(g = 10 ms^(-2))
Answer» 2S `2sqrt(2)s` `(1)/(2)s` `(1)/(SQRT(2))s` ANSWER :B