Electric Car physics?

The new EV 1 electric car (Fig. 18-33) makes use of storage batteries as its source of energy. Its mass is 1380 kg and it is powered by 26 batteries, each 12 V, 52 A·h. Assume that the car is driven on the level at an average speed of 44 km/h, and the average friction force is 223 N. Assume 100 percent efficiency... show more The new EV 1 electric car (Fig. 18-33) makes use of storage batteries as its source of energy. Its mass is 1380 kg and it is powered by 26 batteries, each 12 V, 52 A·h. Assume that the car is driven on the level at an average speed of 44 km/h, and the average friction force is 223 N. Assume 100 percent efficiency and neglect energy used for acceleration. Note that no energy is consumed when the vehicle is stopped since the engine doesn't need to idle.


(a) Determine the horsepower required.
hp
(b) After approximately how many kilometers must the batteries be recharged?
km
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