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This text explores the concepts of potential energy (PE) and kinetic energy (KE) through various examples, such as a ball in motion, a pulley system, and a pendulum. It explains how energy is stored as potential when an object has the capability to move but isn't in motion, and how it converts to kinetic energy when movement occurs, especially in systems influenced by gravity. The roller coaster serves as a perfect illustration of these energy transformations, showcasing the relationship between PE and KE throughout the ride.
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Remember Potential Energy Kinetic Energy When it IS MOVING • Has the POTENTIAL to move but isn’t moving yet. • It’s building up energy to move but there is no motion going on yet
Energy starts as PE (potential energy) because it has the ability to move but isn’t moving yet. It has gravitational energy because once the ball is dropped it falls due to gravity. Energy is converted to KE (kinetic energy) as the ball moves faster and faster as it falls.
Example #2: Pulley Example #3: Pendulum PE PE ½ PE ½ KE ½ KE ½ PE KE
Roller Coaster • http://science.howstuffworks.com/engineering/structural/roller-coaster3.htm
