An electric car with a mass of 1800 kg consumes 15 kWh for traveling 100 km. Figure 6 (a) On average, how much energy is consumed in the unit of joule per kilometer? (b) If 80% of the energy is used to overcome the road friction so that the car maintains a constant speed during the whole journey, estimate the average road friction. (c) If the car is traveling at a constant speed 80 km/h, estimate the power of the car engine. (Use the friction found in (b) as the force.) (d) If the car tums off its engine while it is traveling at a constant speed 80 km/h,

An electric car with a mass of 1800 kg consumes 15 kWh for traveling 100 km. Figure 6 (a) On average, how much energy is consumed in the unit of joule per kilometer? (b) If 80% of the energy is used to overcome the road friction so that the car maintains a constant speed during the whole journey, estimate the average road friction. (c) If the car is traveling at a constant speed 80 km/h, estimate the power of the car engine. (Use the friction found in (b) as the force.) (d) If the car tums off its engine while it is traveling at a constant speed 80 km/h,

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Description: An electric car with a mass of 1800 kg consumes 15 kWh for traveling 100 km.Figure 6(a) On average, how much energy is consumed in the unit of joule perkilometer?(b) If 80% of the energy is used to overcome the road friction so that the carmaintains

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ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

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An electric car with a mass of 1800 kg consumes 15 kWh for traveling 100 km.
Figure 6
(a) On average, how much energy is consumed in the unit of joule per
kilometer?
(b) If 80% of the energy is used to overcome the road friction so that the car
maintains a constant speed during the whole journey, estimate the average road
friction.
(c) If the car is traveling at a constant speed 80 km/h, cstimate the power of the
car engine. (Use the friction found in (b) as the force.)
(d) If the car turns off its engine while it is traveling at a constant speed 80 km/h,
estimate the distance before the car comes to stop.

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