ch. 13 sec. 3
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Chapter 13 Section 3Chapter 13 Section 3
Conservation of EnergyConservation of Energy
FrictionFriction
• Friction is a force that opposes motion between two surfaces.
• Careful Now!
• Friction is a force that opposes motion between two surfaces.
• Careful Now!
Energy is Conserved in a Closed System!
Energy is Conserved in a Closed System!
• A closed system is a group of objects that transfer energy only to each other.
• A closed system is a group of objects that transfer energy only to each other.
• The law of conservation of energy states that energy cannot be created or destroyed.
• The law of conservation of energy states that energy cannot be created or destroyed.
• Energy efficiency is a comparison of the amount of energy used before and after a conversion.
• Energy efficiency is a comparison of the amount of energy used before and after a conversion.
• An aerodynamic object has a shape that helps it be more energy efficient.
• An aerodynamic object has a shape that helps it be more energy efficient.
• Formula One
• How does friction, aerodynamics, and energy efficiency affect this?
• Formula One
• How does friction, aerodynamics, and energy efficiency affect this?
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