Answer:
8ft/s
Explanation:
For computing the average velocity of the cork first we have to determine the frequency which is shown below:
[tex]Frequency = \frac{Time\ taken }{one\ minute}[/tex]
[tex]= \frac{240}{60\ seconds}[/tex]
= 4 Hz
Now the average velocity of the cork is
[tex]\frac{\lambda}{2} = 1 ft\\\\ \lambda = 2ft\\\\ velocity = f\times \lambda \\\\[/tex]
= 8ft/s
We simply applied the above formulas to determine the frequency and the velocity of the cork during this motion and the same is to be considered
