Question detail
If an object has a mass of 5 kg and is raised to a height of 10 m in a gravitational field strength of 9.8 N/kg, what is its gravitational potential energy?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Energy changes in a system, and the ways energy is stored before and after such changes
Question
- A. 490 J
- B. 98 J
- C. 50 J
- D. 5 J
Answer
490 J
Explanation
Using the formula Ep = m x g x h, we calculate Ep = 5 kg x 9.8 N/kg x 10 m = 490 J.
Common mistake
Confusing Units of Measurement
Students often confuse the units for gravitational potential energy, mass, and height, mixing up joules, kilograms, and meters.
Always remember that gravitational potential energy is measured in joules (J), mass in kilograms (kg), and height in meters (m). Double-check your units when performing calculations.
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