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Physics, 12.02.2021 07:20 hello758

An 8.0 kg object moving to the right at 6.0 m/s suffers a head on collision with a 4 kg mass moving at 9.0 m/s to the left. After collision, the 8.0 kg object bounces back at 4.0 m/s. Is this collision elastic or inelastic? Justify your answer with calculations.

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