Mechanical energy--kinetic and potential energy--are illustrated with pendulums and roller coasters. Students learn about energy transfer, and are introduced to the equations for kinetic and gravitational potential energy. They explore the difference between work (an energy transfer) and power (the rate at which energy is transferred) and perform simple calculations of these quantities. Conservation of momentum and collisions are explored in the context of billiards, baseball, golf. The dissipation of energy as heat by means through friction is presented. Students learn about static friction, kinetic friction and drag, and learn to calculate frictional force.
Educator and learner
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