Question

a child in a swing makes 5 complete back and forth vibrations in 21.8 seconds. determine the vibrational frequency of the child, along with the corresponding unit. enter your answer with at least 3 significant digits. frequency

Explanation:

Step1: Define frequency formula

Frequency $f = \frac{\text{Number of vibrations}}{\text{Total time}}$

Step2: Substitute given values

$f = \frac{5}{21.8}$

Step3: Calculate and round to 3 sig figs

$f = 0.229357... \approx 0.229$

Answer:

0.229 Hz