1. The problem statement, all variables and given/known data Hi everyone ,, yesterday I had an exam with the following question : A ball is vertically thrown from a height (h) then it collide with the ground and went to height (5+h), the whole time of the projectile is 2 seconds . (a) Find the initial velocity and the time it took until it reached the ground. (b) Find (h) and the velocity before hitting the ground 2. Relevant equations 3. The attempt at a solution The question was really hard ,, I didn't really know how to solve it .. I applied the following : t1+t2=2 ,, and t1 (the time until it reached the ground) and t2(the time until it reached the height (h+5) , the equation of t1 (h=Vot1+0.5*g*t1^2) and for t2 (5-h=(V+gt1)t2-0.5*g*t2^2) and I combined them together and got V=7.5 m/s .. is it right ?? .. is the attempt to solve is even right ??