1. The problem statement, all variables and given/known data Two identical balls, one is thrown at angle α up a frictionless surface, the other one is thrown at the same angle up in the air. Both have the same initial velocity. A. Which one travels further? Explain. B. Is the mechanical energy of the first ball conserved? Explain. 2. Relevant equations F=ma K(e)=mv^2/2, P(e)=m*g*h Momentum... p=m*v W=Fa 3. The attempt at a solution A. I am having trouble with this one. I tried to use v(f)=v(i)+2ax but then it is the same equation for both the balls. That can't be right? I think that the ball in the air would travel the shorter distance, because it doesn't have the support of the ramp. B. The energy of the first ball is conserved, because there is no friction and the only force except gravity working on that ball is N, which doesn't do work because it's perpendicular.