Scalars, vectors and resolving 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. Which of these is a scalar quantity?
- A. Force
- B. Acceleration
- C. Displacement
- D. Energy
2. A force of 50 N acts at 40° above the horizontal. What is its vertical component?
- A. 38 N
- B. 32 N
- C. 64 N
- D. 42 N
3. A force of 6.0 N acts east and a force of 8.0 N acts north on the same object. What is the magnitude of the resultant?
- A. 14 N
- B. 48 N
- C. 2.0 N
- D. 10 N
4. A student walks 5.0 m north and then 5.0 m south. What is the magnitude of their displacement?
- A. 10 m
- B. 5.0 m
- C. zero
- D. 2.5 m
5. Which method is used to add two vectors at an angle of 70° to each other?
- A. Adding the magnitudes
- B. Pythagoras directly
- C. Scale drawing head to tail
- D. Subtracting the magnitudes