Scalars, vectors and resolving Quiz
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5 questions, one answer each
Each answer is checked as you go, with why.
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1. Which of these is a scalar quantity?
- A. Weight
- B. Momentum
- C. Energy
- D. Displacement
2. Two forces of 6.0 N and 8.0 N act at right angles. What is the magnitude of the resultant?
- A. 14 N
- B. 2.0 N
- C. 10 N
- D. 48 N
3. A 20 N force acts at 30° above the horizontal. What is its vertical component?
- A. 17 N
- B. 10 N
- C. 20 N
- D. 40 N
4. A displacement of 5.0 m east is followed by 5.0 m west. What is the total displacement?
- A. Zero
- B. 10 m east
- C. 10 m west
- D. 5.0 m
5. Which description is correct for the resultant of two vectors drawn tip to tail?
- A. The line joining the tips of both vectors
- B. The line from the tail of the first to the tip of the last
- C. The longer of the two vectors
- D. The line joining the tails of both vectors