ACTIVITY 1.6
ADDING AND SUBTRACTING VECTORS

The subtraction or difference of two vectorsand, we express it with
-, is the addition of the first one them with the opposite of the second:

-=+ ( -)

To draw the difference- we can place -after and join the origin ofwith the end of -.

Also we can use the parallelogram law to draw the difference-. This rule allows us to obtain easily all the additions or subtractions possible of two vectorsand, that is to say +,-, -+ and --.

Observe that -+ = -(-) and that  --= -(+) .

INTERACTIVE ACTIVITY

You have two vectorsandand the four vectors

obtained by the parallelogram law.

You can move the ends of the vectorsand.

Move them of a lot of you form notice the behaviour of two vector the additions/subtractions ofand.

SOLUTION (Animation)

END OF ACTIVITY 1.6
ADDING AND SUBSTRACTING VECTORS