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By: Amanda Hui & Jessica Lu

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1 By: Amanda Hui & Jessica Lu
The Corkscrew By: Amanda Hui & Jessica Lu

2 A 400. -kg roller coaster is at the top of a 48. 0m hill
A 400.-kg roller coaster is at the top of a 48.0m hill. At the bottom of the hill the roller coaster is going 24.5m/s. The density of air is kg/m3 and the cross sectional area of the coaster is 2.50m2. If the drag coefficient for the coaster is 0.850, find: a) The drag force of the coaster at the bottom. b) Assuming drag force is constant down the hill, find the angle of inclination of the hill. Question #1 24.5m/s 48.0m 400-kg

3 7.50m/s Question #2 A roller coaster has two vertical loops one after the other. The roller coaster has a speed of 7.50m/s at the top of the first loop with a height of 25.8m. It then proceeds around the second vertical loop with a height of 16.0m. What is the speed of the roller coaster at the top of the second vertical loop? (Assuming no friction.)

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