1. The problem statement, all variables and given/known data maria throws an apple vertically upward from a height of 1.3 meters with an initial velocity of 2.4 m/s. A) will the apple reach a friend in a treehouse 5.3 m above ground B)how long will the apple be in the air before it hits the the ground 2. Relevant equations vf^2=Vi^2+2ay 3. The attempt at a solution A) i was able to get the answer for number one using the equation above. 0^2=2.4^2+2(-9.81*y) -5.76=-19.62y .3m=Y B)i am not able to get the time however. i used vf=vi+at and i was unable to get the time. 0=2.4+9.81t .244 the answer is .82 seconds. if any one can recommend me an equation to use i will be grateful.