While in Earth\'s orbit, an 80-kg astronaut carrying a 20-kg tool kit is initial

Question

While in Earth's orbit, an 80-kg astronaut carrying a 20-kg tool kit is initially drifting toward a stationary (relative to her) space shuttle at a speed of 2 m/s. If she throws the tool kit toward the shuttle with a speed of 6 m/s as seen from the shuttle, her final speed is A) 1 m/s toward the shuttle. B) 1 m/s away from the shuttle. C) 2 m/s toward the shuttle. D) 4 m/s toward the shuttle. E) 6 m/s away from the shuttle. 12. Which one of the following is characteristic of an inelastic collision? A) Total mass is not conserved. B) Total energy is not conserved. C) Kinetic energy is not conserved. D) Linear momentum is not conserved. E) The change in momentum is less than the total impulse. 13. Three masses are positioned on a horizontal line as follows: 2.0 kg at the origin of the coordinate system, 2.0 kg at 2 meters and 4.0 kg at 5 meters. Determine the center of mass relative to the origin. A) 1.4 m B) 1.9 m C) 2.3 m D) 3.0 m

Explanation / Answer

12) c) kinetic energy is not conserved.

13) com = (2x0 + 2x2 + 4x5)/(2+2+4) = 3 m opyion D)

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