Vectors Quiz
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5 questions, one answer each
Each answer is checked as you go, with why.
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1. What two properties does a vector have?
- A. Length and colour
- B. Magnitude and direction
- C. Area and perimeter
- D. Position and mass
2. Add the vectors (2, 5) and (3, -1).
- A. (5, 4)
- B. (1, 6)
- C. (6, -5)
- D. (5, -6)
3. What is the magnitude of the vector (5, 12)?
- A. 17
- B. 13
- C. 7
- D. 60
4. If OA and OB are position vectors of A and B, how do you find vector AB?
- A. OA + OB
- B. OA − OB
- C. OB − OA
- D. OB × OA
5. Points P, Q and R lie such that PQ = 2a and QR = 4a. Which statement correctly justifies that P, Q and R are collinear?
- A. PQ and QR are equal, so the points must be collinear
- B. PQ is parallel to QR (QR is a scalar multiple of PQ) and they share the common point Q, so P, Q, R are collinear
- C. Collinearity cannot be shown using vectors
- D. PQ and QR have different magnitudes, so the points cannot be collinear