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May 23, 2015

Homework Help: Physics

Posted by CPhy on Thursday, April 18, 2013 at 10:00pm.

A 1.40 kg block moves in a straight line on a horizontal frictionless surface under the influence of a force that varies with position as F = 3x^2 - 2x. If the block's speed passing through the origin was 3.80 m/s, with what speed (in meters/second) does it pass the point x = 8.00 m?

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