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Ch3 HW3 S2008 - Ch3 HW3 S2008 10:26 AM Web Assign Ch3 HW3...

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4/25/08 10:26 AM Ch3 HW3 S2008 Page 1 of 2 http://www.webassign.net/[email protected]/[email protected] Ch3 HW3 S2008 (Homework) KRISTIN SEILOFF PHYS 2211 M & N Spring 08, section N05, Spring 2008 Instructor: Jennifer Curtis Description Non-constant forces, including spring forces Instructions Readings: Sections 3.1-3.3 Web Assign Current Score: 4 out of 6 Due: Monday, February 4, 200812:00 PM EST 1. 4/4 submissions During a time interval of one second, a ball moves in the + x or - x direction (that is, to the right or the left), and a net force acts on the ball in the + x or - x direction. For each motion listed below, check all the descriptions of net force that could produce that behavior. More than one description may be valid for a particular motion. (a) ball permanently at rest [_] [_] net force to the left with constant magnitude [_] [_] net force to the right with constant magnitude [x] [x] net force = 0 [_] [_] net force to the right with increasing magnitude [_] [_] net force to the left with decreasing magnitude [_] [_]
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