Kinetic energy: the energy of motion
Work: the change in kinetic energy
Power: the rate of work done
Explanation:
The kinetic energy of an object is the energy possessed by the object due to its motion. Mathematically, it is given by:
[tex]K=\frac{1}{2}mv^2[/tex]
where
m is the mass of the object
v is its speed
The work done an object is the amount of energy transferred; according to the energy-work theorem, it is equal to the change in kinetic energy of an object:
[tex]W=K_f - K_i[/tex]
where
[tex]K_f[/tex] is the final kinetic energy
[tex]K_i[/tex] is the initial kinetic energy
Finally, the power is the rate of work done per unit time. Mathematically, ti can be expressed as
[tex]P=\frac{W}{t}[/tex]
where
W is the work done
t is the time elapsed
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