Conservation of Momentum: Astronaut Jennifer's lifeline to her spaceship comes loose and she finds herself stranded, "floating" 100 m from the mothership. She suddenly throws her 2.00-kg wrench at 20 m/s in a direction away from the ship. If she and her spacesuit have a combined mass of 200 kg, how long does it take her to coast back to her spaceship?
A. 1000 s
B. 750 s
C. 500 s
D. 250 s
E. 2.50 min
Answer: C
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Exhibit 16-1
A graph of position versus time for an object oscillating at the free end of a horizontal spring is shown below.
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Use this exhibit to answer the following question(s).
Refer to Exhibit 16-1. The point at which the object has zero velocity and negative acceleration is
A. A B. B C. C D. D E. E