A lightweight electric car is powered by eight 16 V batteries. At a speed of 66 km/h, the average frictional force is 1265 N.
(a) What must be the power of the electric motor if the car is to travel at a speed of 66 km/h? Answer in units of kW.
(b) If each battery can deliver a total charge of 121 A · h before recharging, what total charge can be delivered by the 8 batteries before charging?
(c) What is the total electrical energy delivered by the 8 batteries before recharging?
(d) How far can the car travel at 66 km/h before the batteries must be recharged? Answer in units of km.(e) What is the "driving cost" if the cost of recharging the batteries is $0.17 /kW· h?