1. The problem statement, all variables and given/known data Two pucks are moving on a frictionless air table are about to collide. The 1.5 kg puck is moving directly east at 2.0 m/s. The 4.0 Kg puck is moving directly north at 1.0m/s. What is the total kinetic energy of the two-puck system before the collision? A. Square root of 13 J B.5.0J C.7.0 J D.10J E.11J What is the magnitude of the total momentum of the two-puck system after the collision? A. 1.0 kg*m/s B. 3.5 kg*m/s C. 5.0 kg*m/s D. 7.0 kg*m/s E. kg*m/s 2. Relevant equations (1/2)Mv2 P = mv 3. The attempt at a solution For the first question I calculated the kinetic energy of the two pucks and then used the Pythagorean Theorem since the two of them are at right angles which gave me 5 Joules. For the second question I used the Momentum formula for both pucks. I used the Pythagorean Theorem again and got 5 kg*m/s. I am unsure about this though.