curve of radius 950 ft If the vehicle was originally traveling at 45 mi h determine the following Assume that the vehicle traveling at sea level and has a front cross sectional area of 27 ft Also assume the density of air is 0 0766 lb ft3 and the aerodynamic drag coefficient is 0 4 Use the following equation for the rolling resistance R in lb R Crs 2 15C w for which Cr 0 012 Crv rs hp a the additional horsepower on the curve the vehicle must produce to maintain the original speed 102 0 650 x 10 6 sec ft2 u is the vehicle speed in mi h and W is the weight of the vehicle in lb c the total horsepower b the total resistance force in lb on the vehicle as it traverses the horizontal curve 54 22 lb