Question detail
Work done and energy transfer scenario: a passenger is brought to rest over a longer stopping time. Which answer best addresses Work done by a force and the objective to state that one joule is one newton metre?
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. In the seat belt scenario, apply joule to state that one joule is one newton metre while keeping scalar versus vector quantities separate.
- B. In the seat belt scenario, mix up scalar versus vector quantities and ignore joule.
- C. Use a general revision statement without applying Work done by a force to the situation.
- D. Choose a different forces topic instead of explaining state that one joule is one newton metre.
Answer
The correct answer is: In the seat belt scenario, apply joule to state that one joule is one newton metre while keeping scalar versus vector quantities separate.
Explanation
The correct option is In the seat belt scenario, apply joule to state that one joule is one newton metre while keeping scalar versus vector quantities separate.. It is correct because the scenario says a passenger is brought to rest over a longer stopping time, which must be interpreted through Work done by a force. This directly supports the learning objective to state that one joule is one newton metre. Use values 5, 12, and 18 only if the question asks for a calculation. The answer earns credit by naming the relevant force or motion quantity, using units when needed, and avoiding the boundary error scalar versus vector quantities.
Common mistake
Confusion between Joules and Newton Metres
Students often confuse joules with newton metres, thinking they are different units of measurement.
Remember that one joule is defined as one newton metre, which means they are equivalent and can be used interchangeably in the context of work done.
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