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non linear dynamic resulting velocity greater than initial

Question asked by Ryan Enos on Jul 1, 2015

I am practicing using the simulation tools for a device Im working on for an internship. I made a simple non linear dynamic simulation where a steel ball hits a thin walled steel box at 100m/s. the ball did not seem to slow down when bouncing off of the box so i plotted the velocity of the ball and the point on the box where the ball hits,  and the final velocity after bouncing is 140m/s

 

whaiiiii?

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