Answer: 5 m/s2.
- A 2 m/s2
- B 5 m/s2
- C 10 m/s2
- D 20 m/s2
Correct answer: B. 5 m/s2
Explanation: a = F/m = 10/2 = 5 m/s2.
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.