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Physics 15200- HW4

# Physics 15200- HW4 - lai(yl8859 HW04 Ross(15200 This...

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lai (yl8859) – HW04 – Ross – (15200) 1 This print-out should have 8 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. 001 (part 1 of 3) 10.0 points A particle moves in the xy plane with constant acceleration. At time zero, the particle is at x = 5 . 5 m, y = 8 . 5 m, and has velocity vectorv o = (1 . 5 m / s) ˆ ı + ( - 9 m / s) ˆ . The acceleration is given by vectora = (7 m / s 2 ) ˆ ı + (4 . 5 m / s 2 ) ˆ . What is the x component of velocity after 5 s? Answer in units of m / s. 002 (part 2 of 3) 10.0 points What is the y component of velocity after 5 s? Answer in units of m / s. 003 (part 3 of 3) 10.0 points What is the magnitude of the displacement from the origin ( x = 0 m, y = 0 m) after 5 s? Answer in units of m. 004 10.0 points A plane drops a hamper of medical supplies from a height of 3850 m during a practice run over the ocean. The plane’s horizontal veloc- ity was 133 m / s at the instant the hamper was dropped. The acceleration of gravity is 9 . 8 m / s 2 . What is the magnitude of the overall veloc- ity of the hamper at the instant it strikes the surface of the ocean?
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