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Unformatted text preview: Ch4 HW3 (Homework) Arthur Barfield PHYS 2211, section M, Fall 2008 Instructor: Jennifer Curtis Web Assign Current Score: 10.4 out of 13 Due: Tuesday, September 23, 2008 08:01 PM EDT Description Identifying forces on a system; derivative form of the Momentum Principle; statics Instructions Reading: Sec. 4.8-4.10 The due date for this assignment is past. Your work can be viewed below, but no changes can be made. 1. [MI2 04.X.18.01] 9/9 points 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 right (just before moving back to the left),...
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