Question detail

Forces and elasticity scenario: a passenger is brought to rest over a longer stopping time. Which answer best addresses Hooke's law and spring constant and the objective to calculate extension from force and spring constant?

Try the question, check the answer, then read the explanation to understand the curriculum point.

Show answer Topic hub Objective page

At a glance

MCQ

Type

practice

Style

Topic

Forces and elasticity

Question

A. In the seat belt scenario, apply force to calculate extension from force and spring constant while keeping elastic versus plastic deformation separate.
B. In the seat belt scenario, mix up elastic versus plastic deformation and ignore force.
C. Use a general revision statement without applying Hooke's law and spring constant to the situation.
D. Choose a different forces topic instead of explaining calculate extension from force and spring constant.

Answer

The correct answer is: In the seat belt scenario, apply force to calculate extension from force and spring constant while keeping elastic versus plastic deformation separate.

Explanation

The correct option is In the seat belt scenario, apply force to calculate extension from force and spring constant while keeping elastic versus plastic deformation separate.. It is correct because the scenario says a passenger is brought to rest over a longer stopping time, which must be interpreted through Hooke's law and spring constant. This directly supports the learning objective to calculate extension from force and spring constant. Use values 4, 14, and 17 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

Common Mistake in Hooke's Law Calculations

Students often confuse the extension with the total length of the spring when using the formula to calculate extension.

Remember that extension is the increase in length from the original length of the spring, not the total length after the force is applied.

Related flashcards

Flashcard 1 of 5

Press Space to flip, arrows to move