Newton's laws of motion Quiz
Studying this course? Keep your progress in one place.
Pick an answer for each. Quizzes never use energy.
5 questions, one answer each
Each answer is checked as you go, with why.
See all 5 questions
1. A trolley moves at a constant 0.40 m s⁻¹ along a level track. What is the resultant force on it?
- A. 0.40 N forwards
- B. Zero
- C. Equal to its weight
- D. Equal to the friction force
2. A resultant force of 12 N acts on a 3.0 kg object. What is its acceleration?
- A. 36 m s⁻²
- B. 9.0 m s⁻²
- C. 4.0 m s⁻²
- D. 0.25 m s⁻²
3. A book rests on a table. Which force is the third-law pair of the contact force of the table on the book?
- A. The weight of the book
- B. The force of the book on the table
- C. The weight of the table
- D. The force of the floor on the table
4. A box of mass 5.0 kg slides down a smooth slope at 30°. What is its acceleration? (g = 9.81 m s⁻²)
- A. 9.8 m s⁻²
- B. 8.5 m s⁻²
- C. 4.9 m s⁻²
- D. 2.5 m s⁻²
5. In a free-body diagram of a skydiver, which forces should be drawn?
- A. Weight and air resistance on the skydiver
- B. Weight of the skydiver and the pull of the skydiver on the Earth
- C. Only the weight
- D. All forces on the skydiver and on the air