11-1 Notes

Multiple Choice

Why is it important to choose a meaningful frame of reference when describing motion?

• Because it helps describe motion accurately

• Because it makes calculations easier

• Because it is required by physics laws

• Because it avoids confusion with units

Fill in the Blank

Fill in the blank: The vector sum of two or more vectors is called the ___.

Multiple Select

Which of the following statements about displacement vectors is/are correct?

• They are represented by arrows on graphs or maps

• Arrow length shows magnitude

• Arrow direction shows direction

• They always point in the same direction as distance