Section 3.1 Introduction to Vectors

b

A skier slides onto a horizontal patch of slushy snow at velocity vskier, and slows to a constant speed without changing direction. Which of the following expressions could be the skier's resulting velocity? a. -3vskier b.+1/4vskier c. - 1/5vskier d. all of the above

B

A vector remains unchanged a. if it is moved in any direction b. only if it is moved parallel to its original direction c. only if it is rotated perpendicular to its original direction d. only if it is not moved

vector has direction and magnitude. Scalar is magnitude only.(ex. # of pages in a book)

What is the major difference between a vector quantity and a scalar quantity?

d

Which of the following quantities used to describe motion is an example of a vector quantity? A. distance b. speed c. time d. average velocity

c

In a diagram, the length of a vector arrow represents the a. type of vector b. direction of vector c. Magnitude of vector d. cause of the vector

b

If vectors are moved according to the rules of the triangle method of vector addition, then the resultant vector is drawn a. from the tail of the first vector to the tail of the last vector. b. from the tail of the first vector to the tip of the last vector. c. from the tip of the first vector to the tail of the last vector. d. from the tip of the first vector to the tip of the last vector.