Forces and resultant force Quiz
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5 questions, one answer each
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1. A student has a mass of 50 kg. What is her weight on Earth (g = 10 N/kg)?
- A. 500 N
- B. 5.0 N
- C. 60 N
- D. 40 N
2. Which of these is a non-contact force?
- A. Friction
- B. Tension in a rope
- C. Gravity (weight)
- D. Air resistance
3. A force of 20 N acts to the right and a force of 5 N acts to the left on an object. What is the resultant force?
- A. 25 N to the right
- B. 15 N to the left
- C. 4 N to the right
- D. 15 N to the right
4. The forces on a moving car are balanced. What does the car do?
- A. Speeds up
- B. Moves at constant velocity
- C. Slows down
- D. Stops immediately
5. A load of 2 N stretches a spring by 4 cm. What is the extension for a load of 4 N (within the limit)?
- A. 2 cm
- B. 4 cm
- C. 8 cm
- D. 16 cm