Driving south on I-4 from San Diego you drive through Teton- Pass, a.k.a, The Grapevine, a...

 

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Driving south on I-4 from San Diego you drive through Teton- Pass, a.k.a, The Grapevine, a five-mile stretch of road with a 6% grade with a change in elevation of 488 m. Your speed at the top of the pass is 60 mph, and your speed at the bottom is 70 mph. You used regenerative braking to control your speed and charged your 50 kWh battery by 4%. How much energy was lost to all forms of resistance (drag, rolling resistance, electrical resistance in the battery all combined)? That energy eventually dissipates as thermal energy in the air, car, and road. The mass of the loaded car is 2200 kg. (a) Write out your problem-solving strategy for this problem. What concepts or equations do you need? What quantities do you need to find to get your final answer? Do you need to make any assumptions? Start by drawing a diagram or two! (b) Execute your strategy to get the final answer. Driving south on I-4 from San Diego you drive through Teton- Pass, a.k.a, The Grapevine, a five-mile stretch of road with a 6% grade with a change in elevation of 488 m. Your speed at the top of the pass is 60 mph, and your speed at the bottom is 70 mph. You used regenerative braking to control your speed and charged your 50 kWh battery by 4%. How much energy was lost to all forms of resistance (drag, rolling resistance, electrical resistance in the battery all combined)? That energy eventually dissipates as thermal energy in the air, car, and road. The mass of the loaded car is 2200 kg. (a) Write out your problem-solving strategy for this problem. What concepts or equations do you need? What quantities do you need to find to get your final answer? Do you need to make any assumptions? Start by drawing a diagram or two! (b) Execute your strategy to get the final answer.