Hiroshi is generating waves on a rope by flipping the rope up and down. Each motion up or down lasts 0.20 s. The distance from a crest to a trough is 0.40 m.
a. What is the amplitude of the wave?
b. What is the frequency of the waves?

Question

Hiroshi is generating waves on a rope by flipping the rope up and down. Each motion up or down lasts 0.20 s. The distance from a crest to a trough is 0.40 m. 
a. What is the amplitude of the wave? 
b. What is the frequency of the waves?

michele_laino · Answer

I think that your problem, can be represented by the subsequent drawing:
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