What was the second astronaut initial velocity

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Imagine two astronauts working in outer space. Suppose they have equal masses of 75 kg and accidentally run into each other. The first astronaut moves 5.0 m/s to the right before the collision and 2.0 m/s to the left afterwards. If the second astronaut moves 5.0 m/s to the right after the collision, what was the second astronaut's initial velocity? Is this collision elastic?

Reference no: EM132521298

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