Need Physics Help!?

Question

I am stuck on this problem and would be really greatful with any help on it.

An electric car is designed to run off a bank of 12.0 V batteries with a total energy storage of 1.90 x 10^7 J.

a) If the electric motor draws 6.00 kW, what is the current delivered to the motor (in A)?

b) If the electric motor draws 6.00 kW as the car moves at a steady speed of 20.0 m/s, how far will the car travel before it is out of juice (in km)?

Answer 1

a) Power=IV or I=P/V=.5kA

b)P=energy/time or t=energy/power= 1.6*10^4/(12*6) seconds.

Take this time times 20m/s to find how many meters travelled.