1.	Two vectors are opposites if they have ____.
		A.	different magnitudes and the same direction	B.	the same magnitude and same direction
		C.	the same magnitude and opposite directions	D.	different magnitudes and opposite directions
		Hint
	2.	A quantity with only magnitude is called a _____.
		A.	vector	B.	resultant
		C.	scalar	D.	matrix
		Hint
	3.	The magnitude of the zero vector is _____.
		A.	1	B.	any positive number except 1
		C.	0	D.	any negative number
		Hint
	4.	The sum of two or more vectors is called _____.
		A.	a scalar	B.	the zero vector
		C.	the resultant	D.	the magnitude
		Hint
	5.	A ship leaving port sails for 100 miles in a direction 40° north of due east. Find the magnitude of the vertical and horizontal components.
		A.	about 77 miles; about 84 miles	B.	about 50 miles; about 87 miles
		C.	about 87 miles; about 50 miles	D.	about 64 miles; about 77 miles
		Hint