Question detail
Work done and energy transfer scenario: air resistance changes until terminal velocity is reached. Which answer best addresses Energy transfer and braking and the objective to explain why excessive braking can make brakes overheat?
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 parachutist scenario, apply braking to explain why excessive braking can make brakes overheat while keeping scalar versus vector quantities separate.
- B. In the parachutist scenario, mix up scalar versus vector quantities and ignore braking.
- C. Use a general revision statement without applying Energy transfer and braking to the situation.
- D. Choose a different forces topic instead of explaining explain why excessive braking can make brakes overheat.
Answer
The correct answer is: In the parachutist scenario, apply braking to explain why excessive braking can make brakes overheat while keeping scalar versus vector quantities separate.
Explanation
The correct option is In the parachutist scenario, apply braking to explain why excessive braking can make brakes overheat while keeping scalar versus vector quantities separate.. It is correct because the scenario says air resistance changes until terminal velocity is reached, which must be interpreted through Energy transfer and braking. This directly supports the learning objective to explain why excessive braking can make brakes overheat. Use values 2, 7, 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
Brakes Overheating
Students often think that excessive braking only affects the vehicle's speed, not the temperature of the brakes.
Understand that excessive braking generates more heat due to increased work done against friction, leading to overheating.
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