1.	Find the sum of and .
		A.		B.
		C.		D.
		Hint
	2.	Two vectors are opposites if they have ____.
		A.	the same magnitude and opposite directions	B.	the same magnitude and same direction
		C.	different magnitudes and the same direction	D.	different magnitudes and opposite directions
		Hint
	3.	The sum of two or more vectors is called _____.
		A.	the zero vector	B.	the magnitude
		C.	the resultant	D.	a scalar
		Hint
	4.	The magnitude of is 41.3 meters and the magnitude of is 53.6 meters. If and are perpendicular, what is the magnitude of their sum?
		A.	about 34.2 meters	B.	about 54.0 meters
		C.	about 41.9 meters	D.	about 67.7 meters
		Hint
	5.	|| = 14, || = 9, and . Find ||.
		A.	126	B.	23
		C.	5	D.	17
		Hint