Exam-style question
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What is the gravitational potential energy of a 2 kg object raised to a height of 10 m? (Use g = 9.8 N/kg).
- A.196 J
- B.98 J
- C.20 J
- D.80 J
Model answer
What a good answer should say
- 196 J.
- the correct option
Explanation
Why this works
The correct answer is 196 J. This supports Use equations of uniform acceleration.
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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