In a physics lab, a cube slides down a frictionless incline as shown in the figure (Intro 1 figure) , and elastically strikes another cube at the bottom that is only 1/6 its mass. The picture is located in the attachement. If the incline is 30 cm high and the table is 90 cm off the floor, where does each cube land? [Hint: Both leave the incline moving horizontally.]
kinematics and MVi+MbVi=MVf+MbVf
The Attempt at a Solution
I have done several things. I tried to find the final velocity using kinematics and then plug it in to find the other final velocity. I tried using the 1/6 to cancel all masses so that i get vi=vf+1/6vf. I am getting wrong answers everytime though.