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A student investigated the acceleration of a trolley - AQA - GCSE Physics - Question 1 - 2020 - Paper 1
Question 1
A student investigated the acceleration of a trolley. Figure 1 shows how the student set up the apparatus. Before attaching the mass holder the student placed t... show full transcript
Worked Solution & Example Answer:A student investigated the acceleration of a trolley - AQA - GCSE Physics - Question 1 - 2020 - Paper 1
Step 1
Step 2
Step 3
Complete Figure 2.
Answer
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Choose a suitable scale for the x-axis: Choose a scale that allows clear plotting of points based on the resulting force values. For example, each square could represent 0.05 N.
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Plot the results: Plot the points from Table 1 on the graph, ensuring correct placement according to the corresponding resultant force and acceleration values.
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Draw a line of best fit: A line should be drawn that best represents the trend of the plotted points, showing the linear relationship between resultant force and acceleration.
Step 4
Describe the relationship between the resultant force on the trolley and the acceleration of the trolley.
Answer
The relationship is directly proportional; as the resultant force on the trolley increases, the acceleration of the trolley also increases. This means that doubling the force will result in doubling the acceleration.
Step 5
Describe how the investigation could be improved to reduce the effect of random errors.
Answer
To reduce random errors, the student should repeat the measurements/investigation multiple times and calculate the mean to account for any anomalies detected in individual trials. Additionally, ensuring all apparatus are calibrated properly before use would enhance precision.