= (7.20 N)î + (8.40 N)ĵ + (4.50 N) k acts on a 8.90 kg mobile object that moves from an initial position of d; = (7.00 m)î + (3.50 m)Î + (7.80 m) Ê a final position of áf = (2.20 m) î + (3.70 m)ĵ + (4.30 m) k in 9.80 s. Find (a) the work done on the object by the force in the 9.80 s interval, (b) the average force ower due to the force during that interval, and (c) the angle between vectors and dr. a) Number Units b) Number Units c) Number Units

= (7.20 N)î + (8.40 N)ĵ + (4.50 N) k acts on a 8.90 kg mobile object that moves from an initial position of d; = (7.00 m)î + (3.50 m)Î + (7.80 m) Ê a final position of áf = (2.20 m) î + (3.70 m)ĵ + (4.30 m) k in 9.80 s. Find (a) the work done on the object by the force in the 9.80 s interval, (b) the average force ower due to the force during that interval, and (c) the angle between vectors and dr. a) Number Units b) Number Units c) Number Units

Physics for Scientists and Engineers, Technology Update (No access codes included)

9th Edition

ISBN:9781305116399

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter7: Energy Of A System

Section: Chapter Questions

Problem 7.4OQ: A cart is set rolling across a level table, at the same speed on every trial. If it runs into a...

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