Question detail

A crate has a 7 N pull to the right and a 4 N friction force to the left. Which free-body conclusion is correct?

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. The resultant force is 3 N to the right, so the arrows are unbalanced.
B. The forces are balanced because both arrows are horizontal.
C. The resultant force is 11 N because opposite directions are added.
D. The friction force is ignored because it is smaller.

Answer

The correct answer is: The resultant force is 3 N to the right, so the arrows are unbalanced.

Explanation

The correct option is The resultant force is 3 N to the right, so the arrows are unbalanced.. This fits Stopping distances and safety in Forces and motion because it uses the named force or motion relationship in the situation, gives the correct unit or graph meaning where needed, and avoids the specific misconception in the distractors.

Common mistake

Misunderstanding Road Conditions Impact

Students often think that poor road conditions only affect the speed of the vehicle and not the braking distance.

Emphasize that poor road conditions, such as wet or icy surfaces, increase braking distance due to reduced friction, which affects the vehicle's ability to stop effectively.

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