A 4. 0 kg mass has a velocity of 12 m/s to the WEST. The 4. 0 kg mass experiences a constant net force of 8. 0 N to the WEST for 3. 0 sec. What is the velocity of the 4. 0 kg mass at the end of the 3. 0 sec interval?
A) 6. 0 m/s to the WEST
B) 6. 0 m/s to the EAST
C) 18 m/s to the EAST
D) 0. 0 m/s 18 m/s to the WEST