Exam-style question
Try this first
A football is kicked with a momentum of 24 kg m/s. If the mass of the football is 1.2 kg, what is its speed?.
- A.20 m/s
- B.18 m/s
- C.22 m/s
- D.16 m/s
Model answer
What a good answer should say
- 20 m/s.
- the correct option
Explanation
Why this works
The correct answer is 20 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.