It is 7.0 km from your home to the physics lab. As part of your physical fitness program, you could run that distance at 10 km/h (which uses up energy at the rate of 700 W), or you could walk it leisurely at 3.0 km/h (which uses energy at 290 W).
Required:
a. Which choice would burn up more energy, and how much energy (in joules) would it burn?
b. Why does the more intense exercise burn up less energy than the less intense exercise?
Answers: 3
Physics, 21.06.2019 17:30
Abaseball picther can throw a ball at about 90 miles per hour, v = 40 m/s, on solid rock ground. we now put him into space. when he throws the ball, which weighs mb = 0.15 kg moves away from himat the same speed. how long does it take the ball thrown in space to travel the 30 meters to the batter? he weighs mp = 100kg
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Physics, 22.06.2019 00:00
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It is 7.0 km from your home to the physics lab. As part of your physical fitness program, you could...
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