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Velocity problem

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Velocity problem

1. 1. A student drives from Atlanta to Charlotte (250 miles) with the cruise control set to 65mi/hr. On the trip back home, they decide to test the boundries of the law, and drive back with the cruise control set to 85 mi/hr. Sketch a position vs time graph on mini whiteboard. Thursday, August 26, 2010
2. 2. 250 200 150 Position (mi) 100 50 0 0 1 2 3 4 5 6 7 Time (h) Thursday, August 26, 2010
3. 3. A student drives from Atlanta to Charlotte (250 miles) with the cruise control set to 65mi/hr. On the trip back home, they decide to test the boundries of the law, and drive back with the cruise control set to 85 mi/hr. Sketch a velocity vs time graph for the same situation. Thursday, August 26, 2010
4. 4. 100 80 60 40 Velocity (mi/hr) 20 0 0 1 2 3 4 5 6 7 -20 -40 -60 -80 -100 Time Thursday, August 26, 2010
5. 5. Calculate the average velocity for the trip. Thursday, August 26, 2010
6. 6. Calculate the average speed for the trip. Thursday, August 26, 2010
7. 7. 100 80 60 40 Velocity (mi/hr) 20 0 0 1 2 3 4 5 6 7 -20 -40 -60 -80 -100 Time Thursday, August 26, 2010
8. 8. 100 80 60 40 mi 250 mi ∆x = Area = v ∆t = 65 ¯ · = 250 mi h 65 mih Velocity (mi/hr) 20 0 0 1 2 3 4 5 6 7 -20 -40 -60 -80 -100 mi 250 mi ∆x = Area = v ∆t = −85 ¯ · = −250 mi h −85 mih Time Thursday, August 26, 2010
9. 9. 250 200 150 Position (mi) 100 50 0 0 1 2 3 4 5 6 7 Time (h) Thursday, August 26, 2010