Question detail

Work done and energy transfer scenario: speed changes over a measured time interval. 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.

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At a glance

MCQ

Type

practice

Style

Topic

Work done and energy transfer

Question

A. In the athlete sprint scenario, apply braking to explain why excessive braking can make brakes overheat while keeping scalar versus vector quantities separate.
B. In the athlete sprint 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 athlete sprint 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 athlete sprint 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 speed changes over a measured time interval, 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 5, 10, and 21 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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