Question

Two students grab a slinky and start waving it up and down. A third student counts the number of waves that pass by every second and measures the distance between the wave peaks. This data is recorded and a graph is made to show the results.

Determine the velocity of the wave produced.

A) 1 m/s

B) 2 m/s

C) 3 m/s

D) 6 m/s


Graph Attached*

Answer 1

Velocity = frequency * wavelength

v = fλ

Just pick any points on the graph for frequency f and corresponding λ

Taking the first red point at the top.

λ = 6m f = 1 Hz

v = 6 * 1

v = 6 m/s

D.