The lead female character in the movie Diamonds Are Forever is standing at the edge of an offshore oil rig. As she fires a gun, she is driven back over the edge and into the sea. Suppose the mass of a bullet is 0.015 kg, and its velocity is +735 m/s. Her mass (including the gun) is 58 kg.
(a) Determine the recoil velocity which does she acquire in response to a single shot from a stationary position, supposing that no external force keeps her in place?
(b) Beneath the similar supposition, what would be the recoil velocity if, rather, she shoots a blank cartridge which ejects a mass of 5.0 x 10-4 kg at a velocity of +735 m/s?