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Two equal-mass balls made of the different materials swing down at end of strings from equal...

Two equal-mass balls made of the different materials swing down at end of strings from equal heights and hit identical planks. Ball 1 bounces back , whereas Ball 2 flattens and stops when it hits the plank. Ball 1 knocks the plank over and Ball 2 does not. Use your knowledge on impulse momentum to explain why, specifically the system you choose and include a bar chart of the process that is consistent with your chosen system.

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