To determine the speed of the waves, we first need to calculate their frequency.
The frequency (\(f\)) is defined as the number of waves passing a point per second. From the information given, 2 waves pass by the ball in 4 seconds. We can calculate the frequency as follows:
\[
f = \frac{\text{Number of waves}}{\text{Time (seconds)}} = \frac{2 \text{ waves}}{4 \text{ seconds}} = 0.5 \text{ Hz}
\]
Next, we need to calculate the speed (\(v\)) of the waves. The speed of a wave can be calculated using the formula:
\[
v = f \times \lambda
\]
where \( \lambda \) is the wavelength, or the distance between consecutive crests of a wave. In this case, the wavelength is given as 2 meters.
Now we can plug in the values:
\[
v = (0.5 \text{ Hz}) \times (2 \text{ meters}) = 1 \text{ m/s}
\]
Therefore, the speed of the waves is:
\[
\boxed{1 \text{ m/s}}
\]