1. The problem statement, all variables and given/known data A box of mass M, is falling down a ramp with velocity v1,the ramp is inclined at 60 degrees, the momentum is mv. The force on the box is gcos 30. The time it takes to reach the bottom is t1. Then the box falls off the ramp with a velocity v2, it falls some distance h. The time it falls is t2. find t1 and t2. 2. Relevant equations h = 1/2 at2^2 + v2 sin60t. Equation of motion Mg-F=ma 3. The attempt at a solution Now I know by conservation of energy 1/2 Mv1^2 + mgd = 1/2 mv2^2. and conservation of momentum mv1=mv2 But how am I supposed to get the time out of this?