The si unit for energy is the joule (j), which is equal to the kinetic energy possessed by a 2.00-kg mass moving at 1.00 m/s. convert this velocity to mph (1 mi=1.609 km). (a) 4.47 x 10^-7 mph (b) 5.79 x 10^6 mph (c) 5.79 mph (d) 0.0373 mph (e) 2.24 mph