Trucking Expert Witness On Horsepower

On his website, trucking expert witness Lew Grill, the SAGE Corporation, offers a calculator for horse power:

HORSEPOWER: A unit for measuring the power of motors and engines. one horsepower is the work done at the rate of 33,000 foot-pounds per minute and it is equivalent to 746 watts. It is the power estimated to lift 33,000 pounds one foot high in one minute.