Addition and Subtraction of Vectors – Triangle Method
The method of adding vectors graphically is by arranging them so that head of first is touching the tail of second vector and making a triangle by joining the open sides. This method is called head-to-tail method or triangle method of vector addition
o Vector addition is:
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Commutative: A + B = B + A o Associative:( A + B) + C = A +( B + C)
Adding two vectors with equal magnitudes and opposite directions results in null vector.
o Null Vector: A +(-A) = 0
Subtraction is adding a negative vector( opposite direction) to a positive vector.
o A – B = A +(-B)