Energy A measure of the ability of an object to produce a change in itself or its environment

Types of Energy Potential: stored Kinetic: motion

Potential Energy Gravitational Each diver has an amount of stored energy based on mass and height

Potential Energy Gravitational The climber acquired a large amount of potential energy in the climb up from the water

Potential Energy: Gravitational

Potential Energy Elastic Energy has been stored in the pole by bending it

Potential Energy

Potential Energy: Elastic

Kinetic Energy The diver is moving at a high rate of speed when he enters the water

Kinetic Energy 47,000 runners have a large amount of motion energy

Kinetic Energy

Forms of Energy Mechanical Thermal Chemical Electrical Electromagnetic Nuclear

Energy is Energy. Forms of Energy We group energy into different forms to help us understand different physical situations. Nature does not make these distinctions. Energy is Energy.

Energy Conversion Energy can change type KE → PE

Energy Conversion Electrical → Thermal → Electromagnetic Energy can change form Electrical → Thermal → Electromagnetic

Energy is Energy! Energy Conversion All these changes can occur because Energy is Energy!

Energy Transfer Energy can move from object to object

Energy Conservation The total amount of energy is always constant Energy is neither created nor destroyed

Energy Conservation ΣW = ΔKE + ΔPE + ΔQ

Matter and Energy can each be transformed to the other Matter – Energy Matter and Energy can each be transformed to the other Nuclear Reactions E = mc2