A student investigates the acceleration of a trolley. The trolley is released from a fixed position and accelerates. The accelerating force is provided by the weights attached to the trolley with string. Acceleration is measured using a light gate and data logging equipment. Look at the results from the experiment. | Force (N) | Acceleration | |-----------|--------------| | 1.0 | 1.3 | | 2.0 | 2.9 | | 3.0 | 4.3 | | 4.0 | 5.7 | | 5.0 | 6.9 |

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A student investigates the acceleration of a trolley - OCR Gateway - GCSE Physics - Question 21 - 2020 - Paper 1

Question 21

A student investigates the acceleration of a trolley. The trolley is released from a fixed position and accelerates. The accelerating force is provided by the weig... show full transcript

Worked Solution & Example Answer:A student investigates the acceleration of a trolley - OCR Gateway - GCSE Physics - Question 21 - 2020 - Paper 1

Step 1

Mistake 1: Unit for acceleration is missing

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Answer

The student did not include the unit for acceleration in the results table. The correct unit for acceleration should be 'm/s²'.

Step 2

Correction 1:

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Answer

The unit should be added next to each acceleration value in the table to clarify the measurements.

Step 3

Mistake 2: Acceleration at 3.0 N is only recorded to 1 decimal place

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Answer

The student recorded the acceleration for a force of 3.0 N as 4.3, but this value should be consistent with the others in terms of significant figures.

Step 4

Correction 2:

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Answer

Acceleration should be recorded to one decimal place, matching the precision of other measurements, e.g., making it 4.3 m/s².

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A student investigates the acceleration of a trolley - OCR Gateway - GCSE Physics - Question 21 - 2020 - Paper 1

Worked Solution & Example Answer:A student investigates the acceleration of a trolley - OCR Gateway - GCSE Physics - Question 21 - 2020 - Paper 1

Mistake 1: Unit for acceleration is missing

Correction 1:

Mistake 2: Acceleration at 3.0 N is only recorded to 1 decimal place

Correction 2:

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