Consider adding 2 vectors A and B graphically. 1.Select an appropriate scale (ex.20cm=5N) 2.Draw vector A to scale in the proper direction. 3.Draw vector B to the same scale. With its tail at the tip of A and in proper direction. 4.The resultant vector R=A B is the vector drawn from the tailor vector to the tip of vector B. 5.Measure the length of resultant vector B using selected scale and measure its direction with protractor.