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The Manga Guide to Physics
book

The Manga Guide to Physics

by Hideo Nitta, Keita Takatsu, Ltd. Trend-Pro Co.
May 2009
Beginner content levelBeginner
248 pages
6h 21m
English
No Starch Press
Content preview from The Manga Guide to Physics
38 Chapter 1 Law of Action and Reaction
figure on the left here. As this vector is a diagonal of the parallelogram in the figure, it is
obvious that it is also equivalent to b
+ a
. Therefore, we know that the following is true:
Commutative law : a
+ b
= b
+ a
The order in which you add vectors doesn’t matter! You can find the sum of three or
more vectors in the same way.
Negative Vectors
Vector −a
, or a
preceded by a minus sign, yields a sum of zero when added to vector a
. In
an equation, the relationship looks like this:
a
+ (−a
) = 0
In terms of geometry, −a
is simply a vector of the same magnitude as a
, but in the
exact ...
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Publisher Resources

ISBN: 9781593271961