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Posted by on Sunday, April 29, 2012 at 10:42pm.

In an unusual return to space, Astronaut Sally Ride is conducting repair work on the Hubble Space telescope. She throws a hammer of mass 500.0g forward at 20.0m/s. The astronaut, mass 80.0kg, recoils in the opposite direction. What is Sally's recoil velocity?

  • Physics - , Monday, April 30, 2012 at 4:59pm

    v2 =m1•v1/m2 =0.5•20/80 =0.125 m/s

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