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Physics Lesson11 Work and Energy Powerpoint

Physics Lesson11 Work and Energy Powerpoint

Physics Lesson11 Work and Energy Powerpoint

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Kinetic <strong>Energy</strong> is <strong>Energy</strong> Due to Motion<br />

Thermal energy is the kinetic energy of individual molecules moving<br />

in a r<strong>and</strong>om manner.<br />

The kinetic energy of a moving object is determined by the mass <strong>and</strong><br />

speed of the object. The relationship between kinetic energy, mass<br />

<strong>and</strong> speed is represented by the following equation<br />

E k = ½ mv 2<br />

Where:<br />

E k is the energy of the object (in Joules)<br />

m is the mass of the object (in kilograms)<br />

v is the velocity of the object (in meters per second).<br />

This formula will still produce the proper units for energy<br />

(recall that a joule is actually a kgm 2 /s 2 ).

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