Estimate the power needed to overcome the aerodynamic drag
Estimate the power needed to overcome the aerodynamic drag of a person who runs at a rate of 100 yds in 10 s in still air. repeat the calculations if the race is run into a 20-mph headwind: a 20-mph tailwind.
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Estimate the power needed to overcome the aerodynamic drag of a person who runs at a rate of 100 yds in 10 s in still air. repeat the calculations if the race is run into a 20-mph headwind: a 20-mph tail wind.
In a mall, a shopper rides up an escalator between floors. At the top of the escalator, the shopper turns right and walks 5.90 m to a store. At what angle is the escalator inclined above the horizontal
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