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Design Challenge: Build a Roller Coaster. Words to know…. Write the definition for each word in your own words. Displacement – measures the change in position of an object, using the starting point, ending point, and noting the position.
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Words to know….Write the definition for each word in your own words. • Displacement – measures the change in position of an object, using the • starting point, ending point, and noting the position. • * In this lab, you will figure out what the displacement is by finding • the distance the cup moves from the end of the roller coaster. • Momentum – product of mass and velocity; quantity of motion for an • object. Formula: Momentum = Mass x Velocity • Speed – rate of change of an object’s position • Velocity – rate of change of displacement; includes both speed and • direction. Formula: Velocity = Displacement (cm) /time (seconds)
Words to know continued….Write the definition for each word in your own words. • Dependent variable – the variable that you measure • Independent variable – the variable that you manipulate (change)
Energy Conversions in a Roller Coaster PE is greatest at the top of the first hill. Take Cornell Notes… Not all of the cars’ potential energy (PE) is converted into kinetic energy (KE) as the cars go down the first hill. In addition, not all of the cars’ kinetic energy is converted into potential energy as the cars go up the second hill. Some of it is changed into thermal energy because of friction. C. PE at the top of the secondhill is less than KE and PE from the first hill. B. KE at the bottom of the first hill is less than the PE at the top was.
PURPOSE: • To build the fastest roller coaster…. • in the class!!
MATERIALS: • insulation tubing • stopwatch • marble • masking tape • plastic cups
PROCEDURE: • Construct your roller coaster using the materials provided. • Test your roller coaster to make sure the marble makes it though the entire length and adjust your design where necessary. • Determine the speed of your roller coaster by using your stopwatch to measure how fast the marble makes it through your ride.
ANALYSIS and CONCLUSION: • ANALYSIS and CONCLUSION: • After each group has built and tested their roller coaster, use the data from each group to construct a chart. Which group built the fastest roller coaster?