Exam-style question
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If an object falls from a height of 20 meters and takes 2 seconds to reach the ground, what is the value of g calculated using the freefall method?.
- A.10 m/s²
- B.20 m/s²
- C.5 m/s²
- D.15 m/s²
Model answer
What a good answer should say
- 10 m/s².
- the correct option
Explanation
Why this works
The correct answer is 10 m/s². This supports Required practical 3: determine g by a freefall method.
in Motion along a straight line 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
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