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A 3 kg object travelling to the right at 8 m/s collides with a 6 kg...

A 3 kg object travelling to the right at 8 m/s collides with a 6 kg object travelling to the left at 9 m/s. After the collision, the second object is travelling to the right at 10% of its original speed. What is the final velocity of the first object?

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