Question detail
In an experiment investigating acceleration, which variable is typically kept constant?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Forces and motion
Question
- A. The mass of the trolley
- B. The surface on which the trolley moves
- C. The force applied to the trolley
- D. The time measured
Answer
The mass of the trolley
Explanation
To ensure a fair test, the mass of the trolley is usually kept constant while varying the force applied.
Common mistake
Misunderstanding Force and Acceleration Relationship
Students often confuse the effect of changing force on acceleration, thinking that increasing force always leads to a proportional increase in acceleration without considering mass.
To fix this, students should remember Newton's second law (F = ma) and understand that acceleration depends on both the net force applied and the mass of the object. They should practice calculations involving different masses and forces to see how they affect acceleration.
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