HW #7-problems - rathbun (rar2954) HW #7 Antoniewicz...

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Unformatted text preview: rathbun (rar2954) HW #7 Antoniewicz (57380) 1 This print-out should have 19 questions. Multiple-choice questions may continue on the next column or page find all choices before answering. 001 (part 1 of 2) 10.0 points A 1190 kg car starts from rest and accelerates uniformly to 18 . 3 m / s in 11 . 6 s . Find the average power developed by the engine. Assume that air resistance remains constant at 387 N during this time. Answer in units of hp. 002 (part 2 of 2) 10.0 points Find the instantaneous power output of the engine at t = 11 . 6 s just before the car stops accelerating. Answer in units of hp. 003 (part 1 of 2) 10.0 points On the way to the moon, the Apollo astro- nauts reach a point where the Moons gravi- tational pull is stronger than that of Earths. Find the distance of this point from the center of the Earth. The masses of the Earth and the Moon are 5 . 98 10 24 kg and 7 . 36 10 22 kg, respectively, and the distance from the Earth to the Moon is 3 . 84 10 8 m. Answer in units of m. 004 (part 2 of 2) 10.0 points What is the acceleration due to the Earths gravity at this point? The value of the universal gravitational constant is 6 . 672 10- 11 N m 2 / kg 2 ....
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This note was uploaded on 03/08/2011 for the course PHY 303K taught by Professor Turner during the Spring '08 term at University of Texas at Austin.

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HW #7-problems - rathbun (rar2954) HW #7 Antoniewicz...

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