Question detail

Forces and elasticity scenario: a gear changes turning effect and rotation speed. Which answer best addresses Stretching and deformation and the objective to apply WS 2.2, WS 2.3 and WS 3.5 skills when planning and evaluating extension investigations?

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 elasticity

Question

A. In the gear system scenario, apply extension to apply WS 2.2, WS 2.3 and WS 3.5 skills when planning and evaluating extension investigations while keeping elastic versus plastic deformation separate.
B. In the gear system scenario, mix up elastic versus plastic deformation and ignore extension.
C. Use a general revision statement without applying Stretching and deformation to the situation.
D. Choose a different forces topic instead of explaining apply WS 2.2, WS 2.3 and WS 3.5 skills when planning and evaluating extension investigations.

Answer

The correct answer is: In the gear system scenario, apply extension to apply WS 2.2, WS 2.3 and WS 3.5 skills when planning and evaluating extension investigations while keeping elastic versus plastic deformation separate.

Explanation

The correct option is In the gear system scenario, apply extension to apply WS 2.2, WS 2.3 and WS 3.5 skills when planning and evaluating extension investigations while keeping elastic versus plastic deformation separate.. It is correct because the scenario says a gear changes turning effect and rotation speed, which must be interpreted through Stretching and deformation. This directly supports the learning objective to apply WS 2.2, WS 2.3 and WS 3.5 skills when planning and evaluating extension investigations. Use values 2, 9, 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 elastic versus plastic deformation.

Common mistake

Misunderstanding Extension Measurements

Students often confuse extension with the total length of the object when measuring how much a spring has stretched.

To fix this, remember that extension is the increase in length from the original length, so always subtract the original length from the new length after stretching.

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