A student is investigating the average speed of a toy car as it descends a 2.0 m long ramp. The student records the time, ttt, taken for the car to travel from the top of the ramp to the bottom using a handheld manual stopwatch.
Due to systematic errors, the recorded values of t t\,t are consistently greater than the actual time taken.
Suggest one improvement the student could make to their apparatus or procedure to reduce this systematic error and obtain a more accurate measurement of ttt.
53 exam-style questions on Edexcel GCSE Physics 2.2 Speed, velocity and acceleration, covering 2.2.1 Speed and distance–time graphs, 2.2.2 Acceleration and the uniform-acceleration equation, 2.2.3 Velocity–time graphs, and 2.2.4 Measuring speed, typical speeds and free-fall acceleration. Each one has a worked solution and a mark scheme showing where the marks go.