The speed of a wave is determined by the properties of the medium through which it propagates and is not directly affected by changes in amplitude or frequency. Therefore, if the amplitude of a wave decreases while its frequency remains constant, the wave's speed will remain the same.
Amplitude refers to the maximum displacement or distance from the equilibrium position of a wave. It is a measure of the wave's intensity or energy, but it does not affect the speed at which the wave travels.
Frequency, on the other hand, represents the number of complete oscillations or cycles of the wave that occur in a given time. It is typically measured in hertz (Hz). The frequency determines the pitch of a sound wave or the color of a light wave, but it also does not have a direct impact on the speed of the wave.
In summary, changes in amplitude and frequency do not alter the speed of a wave. The speed of a wave is primarily determined by the properties of the medium through which it propagates, such as its density, elasticity, and other factors.