1.	Two vectors are opposites if they have ____.
		A.	different magnitudes and the same direction	B.	different magnitudes and opposite directions
		C.	the same magnitude and same direction	D.	the same magnitude and opposite directions
		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 50 miles; about 87 miles	B.	about 64 miles; about 77 miles
		C.	about 77 miles; about 84 miles	D.	about 87 miles; about 50 miles
		Hint
	3.	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
	4.	If a vector has its initial point at the origin, it ________.
		A.	is in standard position	B.	has a magnitude of zero
		C.	is a scalar	D.	has no direction
		Hint
	5.	|| = 14, || = 9, and . Find ||.
		A.	5	B.	17
		C.	23	D.	126
		Hint