Vertical Motion question - Physics?

Question

A basketball player achieves a hang time of

0.516 s in dunking the ball.

The acceleration of gravity is 9.8 m/s2 .

What vertical height will he attain? An-

swer in units of m.

Answer 1

If his hang time is 0.516s, half is up and half is down so each half of the jump takes 0.258s. There is no initial velocity if we start at the top of his jump and calculate the distance back down to ground, in wich case d = at^2/2 = 9.8*(0.258)^2/2 = 0.326m