kinetic energy of 212 mN+m. 1.32 Calculate the kinetic energy in ft-lb of a 1-slug mass if it has a velocity of 4 ft/s. 1.33 Calculate the kinetic energy in ft-lb of an 8000-lb truck moving at 10 mi/h. 1.34 Calculate the kinetic energy in ft-lb of a 150-lb box mov- ing on a conveyor at 20 ft/s.