Question 2 of 9702 Paper 3 is short on measurements and long on judgement. Measure the ramp height through the magnifier, time the ball yourself, decide whether your two values of k support the relationship, then pick out the limitations and improvements that actually earn marks. Every attempt uses a different ramp. Allow about 45 minutes.
Checked: Cambridge 9702 Paper 3, 2017 to 2019 and 2023 to 2025. Only the papers in our collection are listed, so the real number may be higher. Question papers are available from Cambridge.
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h to the nearest millimetre, a sensible percentage uncertainty, and repeated stopwatch timings at two different heights.
Two correct values of k, then a percentage difference compared with a criterion you state, and a conclusion that follows from the comparison.
Four different, specific problems with this experiment. “Human error” and “inaccurate equipment” score nothing.
Four specific changes, each dealing with the limitation it is paired with.
The marking follows the conventions in published Cambridge mark schemes. The experiments, readings and wording on this page are our own.