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Following a localized earthquake, geophysicists monitor the propagation of a primary seismic wave (P-wave) through a section of the Earth's crust. The distance-time graph below shows how the distance travelled by the P-wave changes with time.

A distance-time graph for a seismic wave. The vertical y-axis is labeled 'Distance in kilometres' and goes from 0 to 50 with major grid lines every 10 units and minor grid lines every 1 unit. The horizontal x-axis is labeled 'Time in seconds' and goes from 0 to 8 with major grid lines every 1 unit and minor grid lines every 0.1 units. A straight line starts at the origin (0,0) and rises with a constant positive gradient, passing exactly through the coordinates (5, 34.0).

The gradient of this line gives the propagation speed of the P-wave.

Determine the speed of the P-wave. Give your answer in km/s\text{km/s}km/s.

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Forces and motion Questions

Practise AQA GCSE Physics Forces and motion with exam-style questions for Foundation and Higher tier. 83 questions covering Describing motion along a line, Forces, accelerations and Newton's Laws of motion, and Forces and braking, matched to the AQA GCSE Physics (8463) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.

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Forces and motion Questions

  1. GCSE
  2. /Physics
  3. /Forces and motion