Exam-style question
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When drawing a free-body diagram, what should be included?.
- A.Only the forces acting in the horizontal direction
- B.All forces acting on the object, including their directions
- C.The object's mass and volume
- D.The object's velocity and acceleration
Model answer
What a good answer should say
- All forces acting on the object, including their directions
Explanation
Why this works
The evidence shows that a complete free-body diagram must include all forces acting on the object, represented with arrows indicating both magnitude and direction. This is essential for accurately analyzing the net force and predicting the object's motion.
The implication is that omitting any force can lead to incorrect conclusions about the object's behavior. Therefore, including all forces is vital for effective application of Newton's laws.
Common mistake
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