On flat ground, a 70 kg person requiresabout 300 W of metabolic power to walk at a steady pace of5.0 km/h 11.4 m/s2. Using the same metabolic power output, that personcan bicycle over the same ground at 15 km/h. A 70 kg person walks at a steady pace of 5.0 km>h on a treadmillat a 5.0% grade. (That is, the vertical distance covered is 5.0% ofthe horizontal distance covered.) If we assume the metabolic powerrequiredis equal to that required for walking on a flat surface plus therate of doing work for the vertical climb, how much power is required?(a) 300 W; (b) 315 W; (c) 350 W; (d) 370 W.
On flat ground, a 70 kg person requiresabout 300 W of metabolic power to walk at a steady pace of5.0 km/h 11.4 m/s2. Using the same metabolic power output, that personcan bicycle over the same ground at 15 km/h. A 70 kg person walks at a steady pace of 5.0 km>h on a treadmillat a 5.0% grade. (That is, the vertical distance covered is 5.0% ofthe horizontal distance covered.) If we assume the metabolic powerrequiredis equal to that required for walking on a flat surface plus therate of doing work for the vertical climb, how much power is required?(a) 300 W; (b) 315 W; (c) 350 W; (d) 370 W.
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On flat ground, a 70 kg person requires
about 300 W of
5.0 km/h 11.4 m/s2. Using the same metabolic power output, that person
can bicycle over the same ground at 15 km/h. A 70 kg person walks at a steady pace of 5.0 km>h on a treadmill
at a 5.0% grade. (That is, the vertical distance covered is 5.0% of
the horizontal distance covered.) If we assume the metabolic power
required
is equal to that required for walking on a flat surface plus the
rate of doing work for the vertical climb, how much power is required?
(a) 300 W; (b) 315 W; (c) 350 W; (d) 370 W.
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