|MadSci Network: Physics|
Work requires moving an object against a force through some distance. (Lifting weights over your head against gravity is work) WORK = FORCE x DISTANCE (W=Fx) The definitions of acceleration a = (v-v0)/t and distance traveled at an average velocity come into play x = t(v+v0)/2 Work is Fx or max since Force = mass acceleration. Therefore, combining the definition of work, acceleration and the displacement (x) Work = m (v-v0)/t (v+v0)/2 t = m (v^2-v0^2)/2 or = 1/2 m v^2 - 1/2 m v0^2 WORK is the difference in two quantities. The quantity 1/2 m v^2 was named the Kinetic Energy. WORK can be defined as the change in kinetic energy.
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