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1The fundamental unit for length is the mile.
A)True
B)False



2The kilogram is equivalent to a mass of 1000 g.
A)True
B)False



3Only vectors having the same dimensions may be added.
A)True
B)False



4The difference between two vectors is obtained by adding one vector to the negative of the other.
A)True
B)False



5The order in which two or more vectors are added does not affect their resultant.
A)True
B)False



6Given the x component of one vector and the y component of another vector, it is possible to find the resultant of the two vectors mathematically.
A)True
B)False



7The graphical methods of vector addition are not as accurate as the mathematical method.
A)True
B)False



8Vector addition can be performed only for concurrent vectors.
A)True
B)False



9If a boat travels upstream with a speed of 8 km/h in a current whose speed is 3 km/h, the boat's speed relative to the shore is 5 km/h.
A)True
B)False



10The x component of the resultant vector is equal to the sum of the x components of the individual vectors.
A)True
B)False



11Which of the following is not a fundamental quantity?
A)Length
B)Force
C)Mass
D)Time



12The resultant of 10 and 15 lb acting in opposite directions on an object is
A)150 lb
B)25 lb
C)5 lb
D)20 lb



13Which is a scalar quantity?
A)Velocity
B)Force
C)Speed
D)Displacement



14A force of 3 N acts perpendicularly to a force of 4 N. Their resultant has a magnitude of
A)12 N
B)7 N
C)5 N
D)1 N



15Which is a vector quantity?
A)Volume
B)Time
C)Distance
D)Displacement



16Given that the units of s, v, a, and t are feet, feet per second, feet per second squared, and seconds, respectively, which of the following equations is dimensionally incorrect?
A)s = vt + ½at
B)2as = vf 2 - v0 2
C)v = v0 + at
D)s = vt



17A force of 16 N is directed 30o north of east. The y component of the force is
A)8 N
B)13.8 N
C)12 N
D)4.8 N



18A man walks 9 km east and then 12 km north. The magnitude of his resultant displacement is
A)21 km
B)15 km
C)13 km
D)3 km



19The resultant of the forces in Fig. 3-2 is
<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0077158733/294229/fig32.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (17.0K)</a>
A)66.5 N, 222o
B)66.5 N, 132o
C)66.5 N, 228o
D)none of these



20A 20-lb force acts to the left while an 80-lb force acts upward and to the right at an angle of 37o. The magnitude of the resultant force is
A)80 lb
B)70 lb
C)65 lb
D)100 lb



21If two quantities are to be added or subtracted, they must be of the same .



22Three examples of vector quantities are , , and .



23A physical quantity that is specified completely by a number and a unit is called a(n) .



24Every vector can be resolved into two perpendicular vectors called its .



25A physical quantity that is specified completely by a number, a unit, and a direction is called a(n) .



26In the method of vector addition, the tail of one vector is connected to the tip of another until all vectors have been represented.



27The is a single force whose effect is the same as that of a given set of concurrent forces.



28In the component method, the x component of the resultant vector is equal to the sum of the of each vector.



29Forces that intersect at a common point or have the same point of application are said to be .



30The difference between two vectors is obtained by adding one vector to the of the other.







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