Question detail
In an experiment to investigate the effect of changing mass on the acceleration of a trolley, which variable should be controlled?
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 to the trolley
- B. The surface the trolley moves on
- C. The time taken for the trolley to move
- D. The initial speed of the trolley
Answer
The force applied to the trolley
Explanation
To accurately determine the effect of mass on acceleration, the force applied must remain constant throughout the experiment.
Common mistake
Confusing Mass and Weight
Students often confuse mass with weight, thinking they are the same. They may state that mass is measured in newtons instead of kilograms.
Remember that mass is a measure of the amount of matter in an object and is measured in kilograms (kg), while weight is the force acting on that mass due to gravity and is measured in newtons (N).
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