This folder contains lessons, assessments, resources, activities, and images to support a brief study of centripetal motion and centrifugal force. These resources can be used in support of the "Movement of Earth" lessons (refer to the "Centripetal Motion Cont'd Impressionistic" lesson) or after studying Newton's Laws of Motion in the "Motion" lessons (refer to the "Centripetal Motion Cont'd Physics" lesson). These lessons are interesting and fun for students as they rely on students' intuitive understanding of motion, simple experiments, and the excitement of roller coasters.

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Centripetal Motion

by Meredith Beaton

This lesson contains a brief introduction to centripetal and centrifugal force, how they each act on objects moving in orbits, and demonstrations of each.
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This assessment asks students to reflect on their understanding of centrifugal and centripetal force and briefly answer questions based on what they've learned.
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This lesson solidifies understanding of centripetal force and motion and builds upon this knowledge with potential and kinetic energy. Students are expected to experiment, infer, and summarize observations of impressionistic experiments.
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This assessment is for students to complete while at an amusement park for a physics day. An adaptation of this assessment can also be used for students to evaluate model roller coasters that they build in the classroom. This is the assessment that reflects the lesson "Centripetal Motion Cont'd Impressionistic."
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This lesson reviews the concepts of centripetal and centrifugal motion. Additionally, students experiment with height and speed and their affect on roller coaster physics. Finally, students will relate height and speed through potential and kinetic energy and derive the formula for calculating velocity of a coaster car given an initial height.
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This assessment is for students to complete while at an amusement park for a physics day. An adaptation of this assessment can also be used for students to evaluate model roller coasters that they build in the classroom. This is the assessment that reflects the lesson "Centripetal Motion Cont'd Physics."
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Centripetal Force

by Meredith Beaton

This image shows the inertial force of the coaster car (the yellow arrows) and the centripetal force of the track (the orange arrows) that result in the coaster car moving in a loop (centripetal motion) along the roller coaster. Original Image (w/o arrows) by J.delanoy. License: CC-BY-SA. Source: http://commons.wikimedia.org/wiki/File:Roller_coaster_vertical_loop.ogg Modified image (w/arrows) by Meredith Beaton. License: CC-BY-SA
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Potential Energy Height

by Meredith Beaton

This image shows the initial height of a coaster car and, therefore, the potential energy for the car during the ride. Original image (w/o orange font) by Alton. License: CC-BY Source: http://commons.wikimedia.org/wiki/File:Scream!_whole.JPG Modified Image (w/ orange font) by Meredith Beaton. License: CC-BY-SA
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