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 0.005 kg, and its velocity is +719 m/s.
Her mass (including the gun) is 48 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 +719 m/s?
i believe it may be necessary for me to find the forces first, and use an equation involved with the principle of Linear Momementum?