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Published byLorena Berry
Modified over 6 years ago
Ability to cause change Lots of forms Light/radiant Sound Electrical Chemical Heat/thermal Nuclear Mechanical
Energy of motion Depends on Mass of object Speed of object E k = ½ mv 2 Unit: Joule (J)
Stored energy due to position Elastic Stored in something that can be stretched or compressed Chemical Stored in chemical bonds
Gravitational Energy stored by object due to position above Earth’s surface Depends on Mass of object Height of object E g = mgh Unit: Joule (J)
Energy cannot be created or destroyed But it can be TRANSFORMED Light Bulb Food Radio
Total energy remains constant
E = mc 2
Transfer of Energy Force moves an object over a distance Movement must occur in direction of force
When work is done, energy is transferred Doing work on object increases object’s energy W = Fd Unit: Joule (J)
Rate of energy transfer Rate at which work is being done Power = Work/time Unit: Watt (W) 1 HP = 746 W
The ability to do work Work = Force x distance.
Energy Chapter 4.
Chapter 5 Section 1: What is Energy?
Potential and Kinetic Energy. Work and Energy Work = force x distance Work is only done when an object changes position Expressed in joules Energy = the.
Work. Energy. Power. Physical work Work (W) is defined as the force (F) times the distance (s) moved in the direction of the force (cos Θ ) NB! Θ is angle.
Section The Nature of Energy. Warm-Up: Examine your lab data from yesterday. What relationship do you notice between momentum and kinetic energy?
The Nature of Energy Section 4.1. Energy Every change that occurs involves. Every change that occurs involves. Moving objects have energy Moving objects.
Forms and Transformations
CH. 4 Energy and a little bit of Ch The Nature of Energy 4.2 Conservation of Energy 5.1 Work.
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.
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 13: Work and Energy
IGCSE Coordinate Science 1 P3: Energy, Work, and Power Unit 7 – part 1.
The Nature of Energy. Power, by definition, is the time rate of doing work; or the time rate transfer of energy. P = W / tP = W / tP = W / tP = W / t.
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
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