Physics 121 General Physics
Concept Quizzes
Chapter 3. Vectors

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Two vectors have unequal magnitudes. Can their sum be zero?
Yes, in some cases.
No, never.

A vector A is added to a vector B. Under what conditions does the resultant vector A + B have greatest magnitude?
When A and B are parallel and in the same direction.
When A and B are parallel and in the opposite direction.
When A and B are perpendicular.
The magnitude of A + B does not depend on the directions of A and B.

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