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# Ch2 HW1 - WebAssign Ch2 HW1 2008(Homework Current Score 21...

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Ch2 HW1 2008 (Homework) Arthur Barfield PHYS 2211, section M, Fall 2008 Instructor: Jennifer Curtis Web Assign Current Score: 21 out of 21 Due: Wednesday, August 27, 2008 09:00 AM EDT Description System and surroundings; the Momentum Principle; net force; impulse Instructions Readings: Sections 2.1-2.3 The due date for this assignment is past. Your work can be viewed below, but no changes can be made. 1. [MI2 02.X.01.01] 1/1 points A ball moves in the direction of the arrow labeled a below. The ball is struck by a stick which briefly exerts a force on the ball in the direction of the arrow labeled c below. Which arrow best describes the direction of , the change in the ball's momentum? c c Solution or Explanation has the same direction as the applied force, since = t . 2. [MI2 02.X.00.01] 3/3 points You lift a heavy box. We'll consider this process for different choices of system and surroundings. (1) Choose the box as the system of interest. What objects in the surroundings exert significant

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forces on this system?
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Ch2 HW1 - WebAssign Ch2 HW1 2008(Homework Current Score 21...

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