Hi guys would need some help here, not sure if I did it right cause recently I got so lost/confused in the class, just out of no where. I always understood most of the stuff and the thing that irritates me is that it doesn`t seem hard at all. So here goes. Conservation Of Momentum 1) Two figure skaters are facing each other, with their palms together.Both skaters are intially at rest on a frictionless surface. The 1st skater has a mass of 40kg and the 2nd skater has a mass of 60kg. 1st skater pushes off of skater ( 2nd one ) in such a way that skater #1 moves left and skater #2 moves right. After the puss off skater #2 moves with velocity of 6m/s. Determine the direction and volecity of skater #1 after the push. Now this is as far as I know a recoil problem. Where do I start at ? I came up with an answer of 9 seconds but the way I did it looks way too easy. Could some one help me out with this one ? Here`s another one. 2) A 100kg fullback is running due west with a velocity of 10m/s. At the goal line he collides head-on with a 120kg linebacker, moving due east at 8m/s. Based on the info given, does the fullback drive the linebacker into the end zone or is he pushed backwards by the linebacker ? Explain the reasoning. I found the forces of both runners. Fullback - 1000N Linebacker -960N So the fullback should make it into the end zone, cause he is running with bigger force than the linebacker.