Question detail

Forces and motion scenario: a car driver reacts, brakes, and transfers kinetic energy thermally. Which answer best addresses Newton's laws of motion and the objective to explain that a non-zero resultant force causes acceleration?

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 resultant force to explain that a non-zero resultant force causes acceleration while keeping velocity versus acceleration separate.
B. In the car braking scenario, mix up velocity versus acceleration and ignore resultant force.
C. Use a general revision statement without applying Newton's laws of motion to the situation.
D. Choose a different forces topic instead of explaining explain that a non-zero resultant force causes acceleration.

Answer

The correct answer is: In the car braking scenario, apply resultant force to explain that a non-zero resultant force causes acceleration while keeping velocity versus acceleration separate.

Explanation

The correct option is In the car braking scenario, apply resultant force to explain that a non-zero resultant force causes acceleration while keeping velocity versus acceleration separate.. It is correct because the scenario says a car driver reacts, brakes, and transfers kinetic energy thermally, which must be interpreted through Newton's laws of motion. This directly supports the learning objective to explain that a non-zero resultant force causes acceleration. Use values 2, 7, and 13 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 velocity versus acceleration.

Common mistake

Misunderstanding Resultant Force

Students often think that a non-zero resultant force means the object will always speed up, ignoring the possibility of changing direction.

Clarify that a non-zero resultant force causes acceleration, which can be an increase or decrease in speed or a change in direction.

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