Thank you, it helped me think about it differently.
I used P = F x V => P = maV and integrated the acceleration with respect to distance and velocity to get the correct answer.
Homework Statement
A vehicle weighs 3000 lbf and has an initial velocity of 68 mph. If the braking system is designed to stop the vehicle at constant power, calculate the stopping distance in feet, if the stopping power is 100 hp.
m = 3000 lbf / 32.2 ft/s2 = 93.17 (lbf-s2)/ft
v = 68 mph...