Question detail

Forces and motion scenario: a car driver reacts, brakes, and transfers kinetic energy thermally. Which answer best addresses Distance-time graphs and the objective to interpret a steeper gradient as a greater speed?

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

Forces and motion

Question

A. In the car braking scenario, apply gradient to interpret a steeper gradient as a greater speed while keeping speed versus velocity separate.
B. In the car braking scenario, mix up speed versus velocity and ignore gradient.
C. Use a general revision statement without applying Distance-time graphs to the situation.
D. Choose a different forces topic instead of explaining interpret a steeper gradient as a greater speed.

Answer

The correct answer is: In the car braking scenario, apply gradient to interpret a steeper gradient as a greater speed while keeping speed versus velocity separate.

Explanation

The correct option is In the car braking scenario, apply gradient to interpret a steeper gradient as a greater speed while keeping speed versus velocity separate.. It is correct because the scenario says a car driver reacts, brakes, and transfers kinetic energy thermally, which must be interpreted through Distance-time graphs. This directly supports the learning objective to interpret a steeper gradient as a greater speed. Use values 3, 5, and 14 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 speed versus velocity.

Common mistake

Misinterpreting Gradient

Students often think that a steeper gradient on a distance-time graph indicates a longer distance rather than a greater speed.

Remind students that the gradient represents speed; a steeper gradient means the object is moving faster, not just covering more distance.

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