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Energy (chapter 5) Energy – the ability to do work Electrical, thermal, chemical, etc.
Kinetic energy – energy of motion KE = ½ mass x velocity 2 The label is the kg m 2 /s 2 …or the Joule (J) How does friction affect KE?
Gravitational Potential Energy Energy stored by objects due to their position above Earth’s surface GPE = mgh g = 9.8m/s 2 Let’s look at the connection between GPE and KE…
Potential energy Stored energy or energy of position Elastic PE – energy that can be stored in something that can be stretched or compressed Chemical PE – energy stored in chemical bonds
Law of Conservation of Energy Energy is neither created nor destroyed, but transformed! Light bulb (electrical light) Mechanical energy = PE + KE
Nuclear reactions Fusion – the combining of 2 hydrogen nuclei Fission – splitting one atom into 2!
Energy The ability to cause a change.
Chapter 4: Energy.
Energy. What is Energy? Energy is the ability to cause change Any time you move, or move something you are using energy.
Chapter 4 Energy. Energy A. What is Energy? Energy is the ability to cause change. 1. Different Types of Energy a. thermal energy b. chemical energy c.
Chapter 4 ENERGY. What is energy? Energy is the ability to do work (cause change). When a force causes an object to be displaced, work was done upon the.
Chapter 4 Energy. What you will learn: Definition of energy, different forms of energy. How to calculate kinetic energy. How to calculate gravitational.
Potential and Kinetic Energy
Forms and Transformations
Physical Science Ch. 4. Section 1 EnergyEnergy –is the ability to cause change Two types of energyTwo types of energy –Potential Energy –Kinetic Energy.
Chapter 4. The nature of energy Energy: The ability to do work or cause change All energy involves either motion or position Where are we using energy.
Energy Every observable change requires energy.
Chapter 4. Ability to cause change Lots of forms Light/radiant Sound Electrical Chemical Heat/thermal Nuclear Mechanical.
Energy. What is Energy Energy is the ability to cause change or do work TYPES – Electrical – Chemical – Radiant – Thermal – Mechanical – Thermal – Nuclear.
Energy and Conservation Physics Chapter 5-2 (p ) Chapter 5-3 (p )
Chapter 4: Energy Coach Perez 2/05/2014.
Chapter 13: Work and Energy
P. Sci. Unit 4 Chapter 15 Energy. Energy and Work Whenever work is done, energy is transformed or transferred to another system. Energy is the ability.
Mechanical Energy Ch. 4. Energy Is the ability to do work. Energy = work Units = Joules (J) James Prescott Joule.
Kinetic and Gravitational Potential Energy
Energy What is energy?. Energy is the ability to do work or cause change.
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