Recent content by ambsop

I now understand why my first approach was wrong, but I don't know how to start this problem.

I'm confused. I think I'm over complicating this problem. So that equation you just gave me, comes from the kinetic energy equation right? But is it v1cos1 or v2cos2? And where does momentum play into this? Do I really need to break it up into the x and y components?

okay, so i tried that and I'm still stuck. Here's what I did: (' meaning after collision) V1x = v1'cos1 + v2'cos2 V1y = v1'sin1 + v2'sin2 V^2 = V1x^2 + V2y^2 (v1'cos1)^2 + 2v1'v2'cos1cos2 + (v2'cos2)^2 + (v1'sin1)^2 + 2v1'v2'sin1sin2 + (v2'sin2)^2 From kinetic energy: V^2 = v1'^2 +...

Homework Statement Object 1 with velocity v hits object 2, of same mass at velocity 2. Prove that the angle between them after the collision is equal to 90 degrees. Homework Equations PE inital = PE final KE initial = KE final The Attempt at a Solution P x component m1 x v1 + 0...