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power, not work
Your article opened with the statement:
"Work equals force times distance divided by time (W = F x D / T)."
As a former physics teacher, I feel compelled to correct you!
The simplified definition of WORK is force times distance (W = F x D).
The simplified definition of POWER is work divided by time (P = W / T).
Since work is force times distance, power can also be thought of as force times distance divided by time. (P = F x D / T).
THE FORMULA YOU GAVE FOR WORK IS ACTUALLY THE FORMULA FOR POWER!
Actually these formulas only apply if the distance is in a straight line and the direction of the force is exactly the same as the direction of the motion, and the force is constant over time. If these assumptions are not true (usually they are not in practice) then calculating power requires a little vector analysis and calculus.
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