Answered: In a performance test, each of two cars…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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In a performance test, each of two cars takes 9.1 s to accelerate from rest to 28 m/s. Car A has a mass of 1359 kg, and car B has a mass of 1906 kg. Find the net average force that acts on (a) car A and (b) car B during the test. A stream of water strikes a stationary turbine blade horizontally, as the drawing illustrates. The incident water stream has a velocity of +16.0 m/s, while the exiting water stream has a velocity of -16.0 m/s. The mass of water per second that strikes the blade is 44.0 kg/s. Find the magnitude of the average force exerted on the water by the blade. A student (m = 62 kg) falls freely from rest and strikes the ground. During the collision with the ground, he comes to rest in a time of 0.04 s. The average force exerted on him by the ground is + 18000 N, where the upward direction is taken to be the positive direction. From what height did the student fall? Assume that the only force acting on him during the collision is that due to the ground. In a science fiction novel two enemies, Bonzo and Ender, are fighting in outer space. From stationary positions, they push against each other. Bonzo flies off with a velocity of + 1.5 m/s, while Ender recoils with a velocity of - 2.8 m/s. Determine the ratio mBonzo/mEnder of the masses of these two enemies.

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