Exam-style question
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A car of mass 1200 kg is moving at a speed of 15 m/s. What is its momentum?.
- A.18000 kg m/s
- B.12000 kg m/s
- C.15000 kg m/s
- D.20000 kg m/s
Model answer
What a good answer should say
- 18000 kg m/s.
- the correct option
Explanation
Why this works
The correct answer is 18000 kg m/s. This supports Calculate momentum and impulse.
in Momentum 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.