1.	Find the sum of and .
		A.		B.
		C.		D.
		Hint
	2.	A quantity with only magnitude is called a _____.
		A.	scalar	B.	vector
		C.	matrix	D.	resultant
		Hint
	3.	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
	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 41.9 meters	B.	about 67.7 meters
		C.	about 34.2 meters	D.	about 54.0 meters
		Hint
	5.	If both the initial and terminal points of a vector are at the origin, the vector is __________.
		A.	negative	B.	linearly independent
		C.	the zero vector	D.	positive
		Hint