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Energy, Work and Power - Coggle Diagram
Energy, Work and Power
Energy
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Principle of Conservation of Energy states that energy can't be destroyed or created, can only be converted form one form to another or transferred from a body to another. TOtal energy is constant.
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Work
Work done by a constant force on an object is the product of the force and the distance moved by the object in the direction of the force
W=Fd, where W is work done (J), F is constant force (N), d is distance moved by the obj in the direction of the force (m)
Energy is needed to do work, which is done when an obj moves under the influence of a Force
Kinetic energy
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KE=1/2mv^2, where m is mass (kg), v is speed of body (m/s)
Power
P=W/t=E/t, where P is power (W), W is work done (J), E is energy converted (J), t is time taken (s)
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Potential energy
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GPE
GPE=mgh, where m is mass (kg), g is gravitational field strength (m/s^2), h is height (m)
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