A constant force with a magnitude of 1.9x10³ newtons is required to keep an automobile with a mass of 1.0x10³ kilograms moving at a constant speed of 20 meters per second. The work done in moving the automobile a distance of 1.20x10³meters is:
(1) 2.0 X 10⁴ joules
(2) 3.8 X 10⁴ joules
(3) 2.0 X 10⁶ joules
(4) 3.8 X 10⁶ joules