(time/2)^2 * a = H(think in terms of units, time is in s, accelleration is in M/s^2 therefore the result must be in metres)

(4/2) = 22^2 = 44*10 = 40 Metres high (taking gravity as 10M/s^2)

Code: [Select](4/2) = 22^2 = 44*10 = 40 Metres high (taking gravity as 10M/s^2)

the acceleration of it going up isn't the same as it coming down because you threw it.