Question detail

Forces and motion scenario: a force meter stretches a spring and the extension is measured. Which answer best addresses Velocity-time graphs and the objective to calculate acceleration from the gradient of a velocity-time graph?

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 spring test scenario, apply velocity-time graph to calculate acceleration from the gradient of a velocity-time graph while keeping speed versus velocity separate.
B. In the spring test scenario, mix up speed versus velocity and ignore velocity-time graph.
C. Use a general revision statement without applying Velocity-time graphs to the situation.
D. Choose a different forces topic instead of explaining calculate acceleration from the gradient of a velocity-time graph.

Answer

The correct answer is: In the spring test scenario, apply velocity-time graph to calculate acceleration from the gradient of a velocity-time graph while keeping speed versus velocity separate.

Explanation

The correct option is In the spring test scenario, apply velocity-time graph to calculate acceleration from the gradient of a velocity-time graph while keeping speed versus velocity separate.. It is correct because the scenario says a force meter stretches a spring and the extension is measured, which must be interpreted through Velocity-time graphs. This directly supports the learning objective to calculate acceleration from the gradient of a velocity-time graph. Use values 4, 15, 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 speed versus velocity.

Common mistake

Misunderstanding Gradient Calculation

Students often confuse the gradient of a velocity-time graph with the area under the graph, mistakenly thinking both represent acceleration.

Emphasize that the gradient of a velocity-time graph specifically represents acceleration, while the area under the graph represents distance travelled.

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