Question 27
FA student uses a light gate to measure the speed of a trolley.
The Figure shows the apparatus.
Figure
a.[3]
The card blocks the light beam for 0.25 s.
Calculate the speed of the trolley in m/s\text{m/s}m/s.
b.[2]
Explain why using a light gate gives a more accurate value for the speed than using a stopwatch.
c.[2]
Describe one other method the student could use to measure the speed of the trolley in the laboratory.
2.2 Speed, velocity and acceleration Questions
96 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.