ch 5 hw 3

ch 5 hw 3 - Ch5 HW3 f10 Page 1 of 7 Ashlyn Baum Physics...

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Web Assign Ch5 HW3 f10 (Homework) Ashlyn Baum Physics 303K, section B, Fall 2010 Instructor: Jim Chelikowsky Current Score : 31.6 / 33 Due : Wednesday, October 6, 2010 11:30 PM CDT 1. 6/6 points A car moves along the path shown in the diagram. The position of the car at different instants in time is represented by the dots on the diagram; the car starts at point 1 and moves to point 5. In the questions below, is rate of change of the car's momentum, is the component of that is parallel to the car's momentum, and is the component perpendicular to the car's momentum. Select the letter corresponding to the arrow (a-j) that best indicates the direction of the following vector quantities at each point. At point 2, the car's speed is increasing. The due date for this assignment is past. Your work can be viewed below, but no changes can be made. Page 1 of 7 Ch5 HW3 f10 11/21/2010 http:[email protected][email protected] ..

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What is the direction of the car's momentum at point 2? a a What is the direction of the at point 2? a a What is the direction of the at point 2? c c At point 3, the car's speed is not changing. What is the direction of the car's momentum at point 3? c c What is the direction of the at point 3? j j What is the direction of the at point 3? e e At point 4, the car's speed is increasing. What is the direction of the car's momentum at point 4? d d What is the direction of the at point 4? d d What is the direction of the at point 4? j j At point 5, the car's speed is decreasing. What is the direction of the car's momentum at point 5? b b What is the direction of the at point 5? f f What is the direction of the at point 5? h h 2. 5.6/7 points Question: MI3 5.6.P.048 3. 7/7 points Question: MI3 5.6.P.055 Page 2 of 7 Ch5 HW3 f10 11/21/2010 http:[email protected][email protected] ..
A child of mass 21 kg swings at the end of an elastic cord. At the bottom of the swing, the child's velocity is horizontal, and the speed is 6 m/s. At this instant the cord is 3.40 m long. (Take the + x direction to be horizontal and to the right, the + y direction to be upward, and the + z direction to be out of the page.) (a) At this instant, what is the parallel component of the rate of change of the child's momentum? = (kg·m/s)/s

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This note was uploaded on 11/21/2010 for the course PHY 56665 taught by Professor Chelikowsky during the Fall '10 term at University of Texas.

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ch 5 hw 3 - Ch5 HW3 f10 Page 1 of 7 Ashlyn Baum Physics...

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