1. The problem statement, all variables and given/known data Two particles move perpendicular to each other until they collide. Particle 1 has mass m and momentum of magnitude 2p , and particle 2 has mass 2m and momentum of magnitude p . Note: Magnitudes are not drawn to scale in any of the figures. Suppose that after the collision, the particles "trade" their momenta, as shown in the figure. That is, particle 1 now has magnitude of momentum p , and particle 2 has magnitude of momentum 2p ; furthermore, each particle is now moving in the direction in which the other had been moving. How much kinetic energy, Klost , is lost in the collision? Express your answer in terms of m and p. 2. Relevant equations [tex]\sum[/tex] m_i * v_i ?? K = Kcenter mass + Kinternal??? 3. The attempt at a solution I'm having trouble relating the momentums and kinetic energies. If someone can provide a little guidance, that would be great. Since that collision seems to be elastic, i'm assuming that the kinetic energy of the system is being conserved.