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week3 - Physics 1 Discussion Section Problem for the week...

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Physics 1 Discussion Section Problem for the week of April 12-16, 2010 Instructions: Work this problem as a group. Hand in only one completed work- sheet for your group, including all of the steps in the “I SEE” problem-solving process. Problem: Rocket Drop You have been hired as a trajectory analyst for Orbital Sciences Corpora- tion. OSC is the prime contractor for Pegasus, a rocket designed for plac- ing small payloads into orbit. Pe- gasus is dropped from a converted airliner called Stargazer that flies at a constant altitude of 14,000 m in a straight line at a steady speed of 720 km/h. After Pegasus is dropped, Stargazer maintains the same speed and altitude and continues to fly in a straight line. Pegasus falls for a brief time, after which its rocket motor turns on. Wind tunnel tests show that the vertical motion of the falling Pegasus is essen- tially unaffected by air resistance, but that air resistance pushes the falling Pegasus backwards one meter for every six meters that it falls. Once its rocket motor is on, the combined effects of thrust, gravity, and air resistance give Pegasus a constant
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