1. The problem statement, all variables and given/known data Two rocks are thrown from a cliff of height h at the same speed V0. One rock is thrown up at angle (Theta 1) adn the other is thrown down at angle (Theta 2). Show that both rocks hit the ground at the same speed. V= (V0^2+2gh)^(.5) 2. Relevant equations V'^2=V^2+2ad d=vt+.5at^2 3. The attempt at a solution well, logically it is really easy to solve. When the rock that is launched up comes back down to the level that the other rock is launched down out, it gets the same speed it was launched at (V0), and the other rock is V0 as well, so there you go. I tried a solution with a quadratic formula but itt didnt work, somehow i see that if i proove the firsth equation in my list (formula 5 of the kinematic equations), from galileo's equation i might get something, but im not sure how to do that.