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Unformatted text preview: yindeemark (rry82) Homework 3 chelikowsky (59005) 1 This print-out should have 17 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 particle at rest undergoes an acceleration of 3 . 2 m / s 2 to the right and 4 . 4 m / s 2 up. a) What is its speed after 6 . 4 s? Answer in units of m / s. 002 (part 2 of 2) 10.0 points b) What is its direction with respect to the horizontal at this time? Answer between- 180 and +180 . Answer in units of . 003 (part 1 of 2) 10.0 points A particle travels to the right at a constant rate of 6 m / s. It suddenly is given a vertical acceleration of 3 . 6 m / s 2 for 3 . 1 s. What is its direction of travel after the acceleration with respect to the horizontal? Answer between- 180 and +180 . Answer in units of . 004 (part 2 of 2) 10.0 points What is the speed at this time? Answer in units of m / s. 005 (part 1 of 2) 10.0 points A cannon fires a 0 . 367 kg shell with initial velocity v i = 9 . 9 m / s in the direction = 45 above the horizontal. x h 9 . 9 m / s 4 5 y y The shells trajectory curves downward be- cause of gravity, so at the time t = 0 . 617 s the shell is below the straight line by some verti- cal distance h . Your task is to calculate the distance h in the absence of air resistance.in the absence of air resistance....
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- Fall '08