Question detail
What unit is used to measure work done?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Work done and energy transfer
Question
- A. Newton
- B. Joule
- C. Watt
- D. Meter
Answer
Joule
Explanation
Work done is measured in joules (J), which is defined as one newton metre.
Common mistake
Misunderstanding Energy Transfer in Braking
Students often confuse the energy transferred during braking with the total kinetic energy of the vehicle, failing to recognize that energy is dissipated as thermal energy in the brakes and surroundings.
To fix this, students should focus on the concept that braking forces do work on the vehicle, transferring energy from the kinetic energy store to thermal stores, and practice explaining this process clearly.
Related flashcards
Flashcard 1 of 5
Related practice questions
Question 1 of 5
Choose an answer, get feedback, then move sideways through the set.