Physics Principles and Problems 2009

Section 5.1 : Vectors

Self-Check Quizzes

1
The _____ states that if vector A is at a right angle to vector B, then the sum of the square of the magnitude is equal to the square of the magnitude of the resultant vector.
A)angle of resultant vectors
B)Law of cosines
C)Law of sines
D)Pythagorean theorem
2
In the equation A = Ax + Ay, Ax and Ay represent vector _____.
A)components
B)coordinates
C)points
D)systems
3
The process of breaking a vector into its components is called _____.
  Need a Hint?
A)graphical representation
B)reduction
C)trigonometry
D)vector resolution
4
What is the magnitude of your displacement when you follow directions that tell you to walk 150.0 m north, then 25.0 m east?
A)127 m
B)150 m
C)152 m
D)175 m
5
To find the magnitude of the resultant vector for two vectors that are at some angle other than 90°, use _____.
A)R2 = A2 + B2
B)the Pythagorean theorem
C)R2 = A2B2
D)the Law of Cosines
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