Exam-style question
Try this first
A cyclist accelerates from rest to a speed of 12 m/s. If the mass of the cyclist and the bicycle is 80 kg, what is the change in momentum?.
- A.960 kg m/s
- B.720 kg m/s
- C.840 kg m/s
- D.600 kg m/s
Model answer
What a good answer should say
- 960 kg m/s.
- the correct option
Explanation
Why this works
The correct answer is 960 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.