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4 Waves

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Question 52
F

A student stands at the end of a jetty and watches waves on a lake.

The student counts 18 waves passing a post in 60 s.

The distance between one crest and the next crest is 2.5 m.

a.

Calculate the frequency of the waves.

[2]
b.

Calculate the speed of the waves.

[2]
c.

A boat makes a wave 45 m from the jetty.

Calculate the time taken for this wave to reach the jetty.

[3]
d.

Explain why the student counted the waves for 60 s rather than for 10 s.

[2]
Markscheme

4 Waves Questions

  1. GCSE
  2. /Physics
  3. /4 Waves

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