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Law of Interaction
Every action has an equal and opposite reaction.
opposite
every action has an equal and ___ reaction.
pairs
forces always act in ____.
scalar product
The dot product of two vector quantities a and b is also called what?
commutative
The scalar product is _____.
distributive
The scalar product is ____ over addition.
Large Positive (50-100)
Almost the same direction, acure angle.
Small-Zero
Different directions, right to obtuse angle.
Negative
Opposite directions.