A motor makes one end of a long elastic strip oscillate, producing waves along the strip. A recording of the strip is displayed with all lengths enlarged by a factor of 2.0.
| Measurement | Value |
|---|---|
| number of oscillations made by the motor | 18 |
| time taken for these oscillations | 2.4 s |
| displayed distance from the first crest to the seventh consecutive crest | 1.44 m |
Calculate the wave speed along the strip.