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))

The potential energy of projectile of a projectile at its maximum heig

1.	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))
Answer» 2S `2sqrt(2)s` `(1)/(2)s` `(1)/(SQRT(2))s` ANSWER :B