ACTIVITY 1.2
VECTOR ADDITION

The addition or sum of two vector and is another vector obtained from the following procedure:

1) We put after making coincide the origin of with the end of .
2) The origin of the sum is the origin of .
3) The end of the sum is the end of .

In other words, is the vector that goes from the origin of until the end of when we have put after .

If and then . In other words, .

If we add a vector with his opposite we obtain a vector reduced to a point (his origin and end coincide) it is of the null vector or zero vector that we express with :

+ (-) =

INTERACTIVE ACTIVITY

You have two vectors , and his vector sum.

You can move the origins and the ends of all vectors, the green points A, B and C.

Move the points A, B and C, and observe the behaviour of the two vector sum .

Can you manage the sum to null vector?

SOLUTION