Question detail
Which of the following is NOT a control variable in an acceleration experiment?
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 force applied
- B. The mass of the trolley
- C. The length of the track
- D. The time of day the experiment is conducted
Answer
The time of day the experiment is conducted
Explanation
The time of day does not affect the mechanics of the experiment, while the other options directly influence the results and must be controlled.
Common mistake
Control Variables Confusion
Students often forget to identify all control variables in an acceleration investigation, focusing only on the changing variables.
To fix this, students should list all factors that must be kept constant, such as surface type, mass of the trolley, and angle of the ramp, to ensure a fair test.
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