#### SWJJ

##### Stop Resisting!

Offline

Ok so I have conservation of momentum and conservation of KE

so:

MvVv1 + McVc1 = MvVv2 + McVc2

The Vv1 is 0 so:

McVc1 = MvVv2 + McVc2

-McVc2 -McVc2

----------------------------------------------

Mc ( Vc1 - Vc2) = MvVv2

/Mv /Mv

so:

Vv2 = Mc/Mv (Vc1 - Vc2)

and I can sub Vv2in the KE conservation formula:

Mv(Vv1) ^2 + Mc(Vc1)^2 = Mv(Vv2)^2 + Mc(Vc2)^2

Vv1 = 0

so when I sub Vv2 what does that give me?