Answer: Newton.
- A Joule
- B Pascal
- C Newton
- D Watt
Correct answer: C. Newton
Explanation: The SI unit of force is Newton (N). 1 N = 1 kg x m/s<sup>2.</sup>
Free-body diagram of a block on an incline: weight (mg) resolves into mg sinθ along the slope and mg cosθ into the slope, balanced by the normal force N and friction f.
Concept context
Newton's three laws, friction, circular motion, and free body diagrams.