A car requiring 40 horsepower (hp) to maintain a speed of 60 mph can be powered by 1 kg of hydrogen, which provides 16 kilowatt-hours (kWh) of energy. Given that 1 hp equals 746 watts, 40 hp translates to approximately 29.8 kW. To determine how far the car can travel on 1 kg of hydrogen, one must first calculate the duration of energy supply from the hydrogen fuel cell, then convert that time into distance traveled at 60 mph.
PREREQUISITESAutomotive engineers, energy researchers, and students studying renewable energy technologies will benefit from this discussion, particularly those focused on hydrogen fuel cell applications in transportation.
jesricha said:Homework Statement
A car needs 40 hp to move continuously at 60 mph. How long would 1 kg of hydrogen (talking about hydrogen fuel cells) move such a car, hence how many miles at 60 mph, if 1 kg of hydrogen provides 16 kWh of motive energy?
Homework Equations
1 hp = 746 W
1 kW = 1000 W
The Attempt at a Solution
40 hp = 29.8 kW and we have 16 kWh of power
I don't know where to factor in the 60 mph, though.