Exam-style question
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If a 5 kg object is accelerating at 2 m/s², what is the force acting on it?.
- A.10 N
- B.5 N
- C.15 N
- D.20 N
Model answer
What a good answer should say
- 10 N.
- the correct option
Explanation
Why this works
The correct answer is 10 N. This supports State and apply Newton's three laws of motion.
in Newton's laws of motion because it uses the required mechanics relationship directly. The other options are less suitable because they confuse a different force, motion, energy, momentum, or materials concept.
Common mistake
No common mistake is linked to this question yet.