What is it about analyzing collisions in the center-ofmass frame that simplifies the calculations?
A projectile of mass m1 moving with speed v1 in the +x direction strikes a stationary target of mass m2 head-on. The
collision is elastic. Use the Momentum Principle and the Energy Principle to determine the final velocities of the projectile
and target, making no approximations concerning the masses. After obtaining your results, see what your equations would
predict if m1 >> m2, or if m2 >> m1. Verify that these predictions are in agreement with the analysis in this chapter of the
Ping-Pong ball hitting the bowling ball, and of the bowling ball hitting the Ping-Pong ball.
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