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File Edit View History Bookmarks People Window Help 99% , Sun 2:49 PM q MasteringPhoysics: Ch 10 HW Part 1 Secure https:// Ch 10 HN PaVector Magnitude and Direction Conceptual Question signmentProblemiD 7859603180ffset next previous 3 of 12 nec Vector Magnitude and Direction Conceptual Question Let Fan be the displacement vector from A to B, Fac be the displacement vector from B to C, etc. Part A A man out waking his dog makes one complete pass around a perfectly square city block. He starts at point A and walks clockwise around the block. (Eigure.1 Which of the folowing vectors if any are equal to FAn Hints O None of the above My Answers Give Up Part B Which of the following vectors id any are equal to -FAs FCD None of the above My Answers Shee Up Part C Which of th flowing vector,e any are equal to rAB-FoA? Hints Fac Fe

Explanation / Answer

Vectors have magnitude and direction, such as "1 mile to the east." They do not have specific positions. So, AB is the same vector as DC.

Each vector of AB, BC, CD, and DA is in a different direction, so none of them are equal.

The negative of a vector has the same magnitude in the opposite direction, so -DA = AD.

To add vectors, think of them as arrows and remember that you can move them around as long as you don't rotate them. Try to match up one's end point with the other's start point. The sum is a vector from the start point to the final end point.

-DA = BC, so AB + (-DA) = AB + BC = AC

The answer to question 3 is all of the above.

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