An Introduction to Physical Science
14th Edition
ISBN:9781305079137
Author:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres
Publisher:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres
Chapter1: Measurement
Section: Chapter Questions
Problem 7FIB
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Four small disks A, B, and C can slide freely on a frictionless horizontal surface. Disks B, C, and D are connected by light rods and are at rest in the position shown when disk B is struck squarely by disk A which is moving to the right with a velocity v0 = (38.5 ft/s)i. The weights of the disks are WA = WB = WC = 15 lb, and WD = 30 lb. Knowing that the velocities of the disks immediately after the impact are vA= vB = (8.25 ft/s)i, vC = vCi and vD = vDi , determine (a) the speeds vC and vD, (b) the fraction of the initial kinetic energy of the system which is dissipated during the collision.
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