In a football game, a receiver is standing still, having just caught a pass. Before he can move, a tackler, running at a velocity of +3.1 m/s, grabs him. The tackler holds onto the receiver, and the two move off together with a velocity of +1.6 m/s. The mass of the tackler is 130 kg. Assuming that momentum is conserved, find the mass of the receiver. 1 kg 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 0.012 kg, and its velocity is +727 m/s. Her mass (including the gun) is 56 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? 1 m/s
(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 +727 m/s? 2 m/s.