1.	The magnitude of the zero vector is _____.
		A.	any negative number	B.	0
		C.	any positive number except 1	D.	1
		Hint
	2.	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 64 miles; about 77 miles	B.	about 87 miles; about 50 miles
		C.	about 77 miles; about 84 miles	D.	about 50 miles; about 87 miles
		Hint
	3.	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 67.7 meters	B.	about 41.9 meters
		C.	about 34.2 meters	D.	about 54.0 meters
		Hint
	4.	If both the initial and terminal points of a vector are at the origin, the vector is __________.
		A.	the zero vector	B.	negative
		C.	linearly independent	D.	positive
		Hint
	5.	If a vector has its initial point at the origin, it ________.
		A.	has no direction	B.	is in standard position
		C.	is a scalar	D.	has a magnitude of zero
		Hint