An astronaut is a distance L from her spaceship, and is at rest with respect to the ship, when she discovers that her tether has broken. She tosses a wrench with a speed Vw in the opposite direction of the ship to propel herself back to the ship. The astronaut has mass MA, and the wrench has mass Mw.

a) Draw a sketch, showing the subsequent motion of the astronaut and the wrench. b) What is the initial momentum (before toss) of the astronaut plus wrench system? What is the final momentum?