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Q. Two astronauts, one of mass 61 kg and the other 80 kg, are initially at rest in outer space. They then push each other apart. How far apart are they when the lighter astronaut has moved 15 m?

Q. An airplane is flying with a velocity of 99.0 at an angle of 26.0 above the horizontal. When the plane is a distance 123 directly above a dog that is standing on level ground, a suitcase drops out of the luggage compartment.

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