On Sat, 25 Dec 2010 14:48:48 +1100, Jordan wrote:


So, what would be the size and weight of a spring that would be needed
to propel a one ton car 50 miles?
Similarly, an air tank?

Jordan

Unanswerable, as is how many horsepower-hours are needed to propel
said one-ton car 50 miles. The mass of the car is only relevant if
the car changes elevation in that 50 miles. Rolling friction, wind
resistance, speed and how much braking is done during the trip are
also significant variables.