McGraw Hill Integrated II, 2012
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McGraw Hill Integrated II, 2012 View details
7. Vectors
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Exercise 12 Page 687

Choose an appropriate scale and use it to draw an arrow presenting the given vector.

Example Answer:

Practice makes perfect
We are asked to draw the vector g that represents 60 inches per second at 145^(∘) to the horizontal. First, we will choose the scale. For example, we will use 1 in.:20 inches per second. Using this scale, we can evaluate the length of our vector. 60/20=3 In our diagram g will have a length of 3 inches. Since we are given that our vector is 145^(∘) to the horizontal, we will draw a segment that satisfies this condition. To do this, we will draw a horizontal segment, and then put a protractor in the endpoint of this segment and find the appropriate angle on the left side.

Next we will use a ruler to find the point that lies on the red segment and is 3 inches from the center point.

Finally, we will connect the points with a ray. This ray will represent the vector g.

Remember to include a scale on the diagram.