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• 1. Multiple-choice
20 seconds
1 pt

What is the minimum number of vectors with unequal magnitudes whose vector sum can be zero?

two

three

four

six

• 2. Multiple-choice
20 seconds
1 pt

Two vectors A and B are added together to form a vector C. The relationship between the magnitudes of the vectors is given by:  $A^2$  +  $B^2$  =  $C^2$ . Which statement concerning these vectors is true?

A and B must be at right angles to each other.

They could have any orientation relative to each other.

A and B must have equal lengths.

A and B must be parallel.

• 3. Multiple-choice
2 minutes
1 pt

Given the vector A = 100.00 N at 30.000 above the negative x- axis. In terms of rectangular form, the vector can also be expressed as

A = -86.60 i + 50.00 j

A = 86.60 i - 50.00 j

A = -50.00 i + 86.60 b j

A = 50.00 i _ 86.60 j

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