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Jan4-13, 06:49 AM   #4
 

Newton's Cradles vs Ball Bouncing off Wall


Quote by Tik View Post
But just like a ball bouncing off the wall, why can't the first ball in the cradle retain some energy and bounce back, passing on the remaining energy to the next ball, hence conserving energy?
Conserving momentum and kinetic energy at the same time gives you a unique solution, which depends on the mass ratio of the objects. Hence there different outcomes.