Chapter 5 - Displacement and Forces in Two Dimension

Question 0

Use the law of sines when ______________________________________. The law of cosines is useful when ______________________________________.

Answer 0

Given two angle measurements and one vector magnitude.

Given two vector magnitudes and an angle between them.

Question 1

The resultant vector always points from the tail of the first vector to the head of the final vector.

Answer 1

True

Question 2

A vector can be broken down into it’s components. What are they?

Answer 2

They are a vector parallel to the x-axis and another parallel to the y-axis.

Question 3

The process of breaking down a vector into it’s components is sometimes called ______________.

Answer 3

Vector resolution.

Question 4

The original vector is the hypotenuse of a right triangle. What does this mean?

Answer 4

This means that the magnitude of the original vector will always be greater than or equal to the magnitude of either component vector.

Question 5

Theta =

Answer 5

The angle that the vector makes with the x-axis, measured counterclockwise from the positive x-axis.