Question detail
What is the unit of elastic 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. Newtons
- B. Joules
- C. Watts
- D. Kilograms
Answer
Joules
Explanation
Elastic potential energy is measured in joules (J), which is the standard unit of energy in the International System of Units (SI).
Common mistake
Misunderstanding Elastic Potential Energy
Students often confuse the variables in the equation Ee = 0.5 x k x e^2, particularly mixing up the spring constant (k) and the extension (e).
To fix this, students should carefully identify each variable: k is the spring constant measured in N/m, and e is the extension in meters. Practicing with examples can help reinforce the correct application of the equation.
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