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 0.011 kg and its velocity is 675m / s Her mass (including the gun) is 52 kg. 

(a) What recoil velocity does she acquire in response to a single shot from a stationary position, assuming that no external force keeps her in place? 

(b) Under the same assumption, what would be her recoil velocity if, instead she shoots a blank cartridge that ejects a mass of 5.0*10^-4 kg at a velocity of 675m / (s ^ 2)?

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The concept behind this scenario is the principle of conservation of momentum The total momentum of ... View the full answer