Question

Assuming 95.0% efficiency for the conversion of electrical power by the motor, what current must the 12.0-V batteries of a 692-kg electric car be able to supply to climb a 359-m high hill in 2.00 min at a constant 11.3 m/s speed while exerting 569 N of force to overcome air resistance and friction

Answer 1

Guven data, Ebliciency = 95). Time = 2 min Mass = 69219 = 2 x 60 speed id = 11.3 m/s -1205 Moltage - 12V We know that, Рошох - Е my2 = 2 x 69 2X (11,3)? 120 - 3681172 W slower Power - Elficieneyx Voltage XI 3681172 -0.195412X I I - 3681172 0.95812 3687172 11.4 I = 32:29 A)