Physics 5054/42 — May/June 2015
Cambridge O-Level · Alternative to Practical · worked solutions for every part, with the mark scheme
Topics Experimental Contexts · Analysis, Conclusions and Evaluation · Observations and Measurements · Use of Techniques, Apparatus and Materials
Two students decide to mark out a 100 m length to use as a running track on a school field.
One student decides to measure the average length of one of his strides and then pace out 100 m. The student is shown walking in Fig. 1.1.
On Fig. 1.1, mark and label the length of one stride.
Estimate a value for the length of the stride of the student.
= ______
Using your value for , calculate the number of strides the student takes when walking 100 m.
number of strides = ______
The second student uses a trundle wheel, as shown in Fig. 1.2. The circumference of the wheel is 50.0 cm and the wheel makes a click each time it turns once.
Explain how a trundle wheel is used to measure the distance of 100 m for the track.
Explain why this is a more accurate method of measuring a distance of 100 m than the method in (a).
The rest of this paper
3 more questions- Q2Analysis, Conclusions and Evaluation · Observations and Measurements · Use of Techniques, Apparatus and Materials13M
- Q3Experimental Contexts5M
- Q4Use of Techniques, Apparatus and Materials · Observations and Measurements · Experimental Contexts7M