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lecture20_1100_S12

lecture20_1100_S12 - PHYS 1100 Spring 2012 I Kinematic...

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I. Kinematic Variables A. Displacement B. Average Speed C. Average Velocity D. Average Acceleration PHYS 1100 Spring 2012 Reading for Wednesday: 2.1 – 2.6, 4.1 – 4.4
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CT1: A flagpole is located at the center of a parking lot. Initially, a cyclist is 20 m due east of the flagpole traveling at a speed of 5.0 m/s in the direction 25° north of west. One minute later, the cyclist is 30 m away from the flagpole in the direction 35° west of south traveling at a speed of 7.5 m/s due north.? What are the signs of the x and y components of the displacement of the cyclist during the one minute span if + x is east and + y is north? A. Positive x , positive y B. Positive x , negative y C. Negative x , positive y D. Negative x , negative y PHYS 1100 Spring 2012
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EX1: A flagpole is located at the center of a parking lot. Initially, a cyclist is 20 m due east of the flagpole traveling at a speed of 5.0 m/s in the direction 25° north of west. One minute later, the cyclist is 30 m away from the flagpole in the direction 35° west of south traveling at a speed of 7.5 m/s due north. What is the displacement of the cyclist during the one minute span?
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