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?