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Unformatted text preview: lim (kl9356) – Homework 9 – Weathers – (17104) 1 This printout should have 10 questions. Multiplechoice questions may continue on the next column or page – find all choices before answering. 001 10.0 points A timevarying net force acting on a 2 . 5 kg particle causes the object to have a displace ment given by x = a + b t + d t 2 + e t 3 , where a = 2 . 2 m , b = 3 . 1 m / s , d = 4 . 4 m / s 2 , and e = 2 m / s 3 , with x in meters and t in seconds. Find the work done on the particle in the first 2 . 5 s of motion. Answer in units of J. 002 (part 1 of 3) 10.0 points A 1850 kg car accelerates uniformly from rest to a speed of 11 . 4 m / s in 3 . 25 s. Find the work done by the net force on the car during this time interval Answer in units of J. 003 (part 2 of 3) 10.0 points Find the average power delivered by the net force to the car in this time interval. Answer in units of w....
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This note was uploaded on 09/07/2010 for the course PHYS 1710 taught by Professor Weathers during the Fall '08 term at North Texas.
 Fall '08
 Weathers
 Magnetism, Force, Work

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