Posted by Me on .
Please help me to solve this problem about
electic potential :
An electric car accelerates for 7.0 s by drawing energy from its 290V battery pack. During this time, 1200 C of charge pass through the battery pack .
Find the minimum horsepower rating of the car.

physics 
Damon,
Joules = Watt seconds = i V t = Q t = 1200*290 = 348000 Joules
Watts = Joules/second = 348000/7 = 49,714 Watts
I do not remember the conversion from Watts to hp 
physics 
bobpursley,
do this: Paste in the google search window
1hp in watts
then memorize that number
Then, even lazier, put in the google search window
49714 watts in hp