22_Physics ProblemsTechnical Physics

22_Physics ProblemsTechnical Physics - Chapter 2 Q2.17...

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Chapter 2 23 Q2.17 Above. Your ball has zero initial speed and smaller average speed during the time of flight to the passing point. SOLUTIONS TO PROBLEMS Section 2.1 Position, Velocity, and Speed P2.1 (a) v = 230 . m s (b) v x t == m m s = 16.1 m s 57 5 9 20 300 .. . (c) v x t = 57 5 0 11 5 . . m 5.00 s ms *P2.2 (a) v x t F H G I K J × F H G I K J 20 1 1 3156 10 21 0 7 7 ft 1 yr m 3.281 ft yr s . or in particularly windy times v x t F H G I K J × F H G I K J 100 1 1 11 0 7 6 ft 1 yr m 3.281 ft yr s . . (b) The time required must have been t x v F H G I K J F H G I K J 3 000 1 609 10 51 0 3 8 mi 10 mm yr m 1 mi mm 1 m yr . P2.3 (a) v x t = 10 5 m 2 s (b) v 5 12 m 4 s
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