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A 20 kg tennis ball launcher shoots a 0.057 kg tennis ball across a frictionless court. If the tennis ball's velocity after it is

A 20 kg tennis ball launcher shoots a 0.057 kg tennis ball across a frictionless court. If the tennis ball's

A 20 kg tennis ball launcher shoots a 0.057 kg tennis ball across a frictionless court. If the tennis ball's velocity after it is launched is 36 m/s to the north, what is the velocity of the tennis ball launcher?

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