Ch2 HW4 S2008

# Ch2 HW4 S2008 - Ch2 HW4 S2008 10:24 AM Web Assign Ch2 HW4...

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4/25/08 10:24 AM Ch2 HW4 S2008 Page 1 of 3 http://www.webassign.net/[email protected]/[email protected] Ch2 HW4 S2008 (Homework) KRISTIN SEILOFF Instructor: Jennifer Curtis Description Choice of system; Collisions; Conservation of momentum Instructions Reading: Sec 2.8-2.10. Note that only two submissions are permitted for Problem 1, which is multiple choice. Web Assign Current Score: 19 out of 20 Due: Monday, January 28, 200808:35 AM EST 1. 2/3 points | 2/2 submissions The windshield of a speeding car hits a hovering insect. Consider the time interval from just before the car hits the insect to just after the impact. For which choice of system is the change of momentum zero? (_) (o) The system consisting of the bug plus the car. (_) (_) The system consisting of the bug alone. (o) (_) The system consisting of the car alone. Compare the magnitude of the change of momentum of the bug to that of the car: (_) (_) The magnitude of change of momentum of the car is bigger. (o)

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Ch2 HW4 S2008 - Ch2 HW4 S2008 10:24 AM Web Assign Ch2 HW4...

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