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kudu91
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Homework Statement
Astronauts are playing catch on the international space station while floating in the Columbus module. One astronaut with mass of 75.0kg, initially at rest, throws a .140kg ball with a speed of 20.0m/s. The second astronaut of mass 89.0 kg catches the ball and throws it back with a speed of 18 m/s relative to the station. What are the recoil velocities of the two astronauts?
Homework Equations
what i need help on is how to start the problem, also what are recoil velocities?
The Attempt at a Solution
i figured i would use the equation momentum 1 = momentum 2, but i don't know what i am to solve for.
i figure since the system is isolated the momentum is conserved, this means its an elastic collision so MV1 = MV2.
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