| Date | May 2014 | Marks available | 1 | Reference code | 14M.1.SL.TZ1.12 |
| Level | Standard level | Paper | Paper 1 | Time zone | Time zone 1 |
| Command term | Question number | 12 | Adapted from | N/A |
Question
A wave of period 5.0m s travels through a medium. The graph shows the variation with distance d of the displacement x of points in the medium.
What is the average speed of a point in the medium during one full oscillation?
A. 0m s–1
B. 4.0m s–1
C. 16m s–1
D. 400m s–1
Markscheme
C
Examiners report
This was an unusual question, and it was disappointing that candidates did not naturally calculate ‘average speed’ as total distance divided by time taken.
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