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Ch4 HW3 S2008

# Ch4 HW3 S2008 - Ch4 HW3 S2008 10:27 AM Web Assign Ch4 HW3...

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4/25/08 10:27 AM Ch4 HW3 S2008 Page 1 of 3 http://www.webassign.net/[email protected]/[email protected] Ch4 HW3 S2008 (Homework) KRISTIN SEILOFF PHYS 2211 M & N Spring 08, section N05, Spring 2008 Instructor: Jennifer Curtis Description Identifying forces on a system; derivative form of the Momentum Principle; statics Instructions Reading: Sec. 4.8-4.10 Web Assign Current Score: 10 out of 13 Due: Monday, February 11, 200812:00 PM EST 1. 9/9 points | 2/4 submissions You throw a ball straight up in the air. At the instant the ball reaches its highest location, what is the direction of the momentum of the ball? zero magnitude zero magnitude At the instant the ball reaches its highest location, what is the direction of the rate of change of momentum of the ball? -y -y At the instant the ball reaches its highest location, what is the direction of the net force acting on the ball? -y -y You launch a fan cart to the right along a track, with the fan blowing against the motion. At the instant the cart reaches its farthest location to the

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