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Energy and the Rollercoaster. CPO Science. What happens to the motion of a marble on a hilly track? How is energy conserved on a roller coaster?. Key Questions. Time Measurement. Stopwatch mode Who can get the shortest time to display?. Time Measurement.
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Energy and the Rollercoaster CPO Science \\screen\Internal\TeacherII\Teacher II.ppt 4/2/2014 6:55:25 PM Page 1
What happens to the motion of a marble on a hilly track? How is energy conserved on a roller coaster? Key Questions
Time Measurement • Stopwatch mode • Who can get the shortest time to display?
Time Measurement • Plug one end of phone cord into the photogate, and the other end into slot A of the timer box • Turn on the “A” light • How does the photogate operate the timer box? • NOW see who can get the shortest time to display!
Roller Coasters • Millennium Force at Cedar Point: • 300 ft drop • 80 degree angle of descent • 93 mph • $25 million to build • Fastest coaster: Japan, 106.9 mph • Biggest wooden coaster drop: Paramount’s King Island, 214 ft drop
Investigate Motion of Marble • How long does it take the marble to break the photogate beam at each of the 7 positions? • Do smaller times correspond to faster or slower speeds?
Investigate Motion of Marble • How would you calculate the speed?
At what two positions is the marble moving the fastest? What is unique about these two positions?
How does the speed of marble 1 compare to the speed of marble 2? • How does the time it takes each marble to reach this point compare?
Investigate the relationship between speed and height more closely • Find the speed of the marble for each of 12 different positions on the coaster • Use the table provided to record your data (note: you don’t have to measure height of marble) • When finished, please complete the speed vs. position graph