Question detail
A car of mass 1200 kg is moving at a speed of 15 m/s. Calculate its kinetic 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. 9000 J
- B. 13500 J
- C. 18000 J
- D. 22500 J
Answer
13500 J
Explanation
The correct option is "13500 J". 13500 J is right because it answers the Energy stores and systems objective: Calculate changes in energy when a system is changed by work done by forces.. The distractors are incorrect because they either use the wrong Physics quantity, confuse an energy store with a transfer, or ignore the wording of this question.
Common mistake
Common Mistake in Energy Calculation
Students often confuse the work done by forces with the energy stored in a system, leading to incorrect calculations.
Ensure to clearly differentiate between work done and energy changes in a system. Remember that work done by forces results in energy transfer, which can change the energy stores in the system.
Related flashcards
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Related practice questions
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