A block of mass = 2.20 kg slides down a 30.0 deg incline which is 3.60 m high. At the bottom, it strikes a block of mass = 7.00 kg which is at rest on a horizontal surface . (Assume a smooth transition at the bottom of the incline.) If the collision is elastic, and friction can be ignored.

Question

A block of mass  = 2.20 kg slides down a 30.0 deg incline which is 3.60 m high. At the bottom, it strikes a block of mass  = 7.00 kg which is at rest on a horizontal surface . (Assume a smooth transition at the bottom of the incline.) If the collision is elastic, and friction can be ignored.

Then I determined the speeds of both blocks after the collision:
m1=4.38
m2=4.02

Now I have to....
Determine how far back up the incline the smaller mass will go.

Grace · Answer

How did you figure out m2?