Physics

Problem

A slinky wave is analysed using two separate graphs drawn on square-grid papers. 1. Displacement–distance graph: each horizontal square represents

0.40\,\text{cm}

. The horizontal span between the first crest and the third crest covers

15

such squares. 2. Displacement–time graph: each horizontal square represents

1\,\text{ms}

. The horizontal span between the first trough and the third trough covers

8

such squares. Determine the speed of the wave. a)

15\,\text{m/s}

3.75\,\text{m/s}

7.5\,\text{m/s}

11.25\,\text{m/s}