1.	Two vectors are opposites if they have ____.
		A.	the same magnitude and opposite directions	B.	different magnitudes and the same direction
		C.	the same magnitude and same direction	D.	different magnitudes and opposite directions
		Hint
	2.	A quantity with only magnitude is called a _____.
		A.	scalar	B.	vector
		C.	resultant	D.	matrix
		Hint
	3.	The magnitude of the zero vector is _____.
		A.	0	B.	1
		C.	any positive number except 1	D.	any negative number
		Hint
	4.	The sum of two or more vectors is called _____.
		A.	a scalar	B.	the magnitude
		C.	the resultant	D.	the zero vector
		Hint
	5.	|| = 14, || = 9, and . Find ||.
		A.	126	B.	23
		C.	5	D.	17
		Hint