From the given equation we can deduce what changes will occur if the frequency of the sound is doubled
V= f (λ)
Speed = frequency. Wavelength
When the frequency is doubled, speed will not change. Because speed depends on factors like temperature, air pressure, density of the gas. Since all these factors are unchanged thus speed will remain unchanged
Frequency is the number of waves produced per second. Frequency and wavelength are inversely proportional .Thus, if the frequency is doubled the wavelength would be halved.
Kinetic energy is the energy for a catapult.
Objects accelerate at ~9.8 Meters per second per second (9.8 Meters peer sec^2. (or ~32 feet per sec^2 for you non metric guys) As they gain speed they will reach a maximum velocity limited by atmospheric resistance, when the resistance vector equals the gravity vector and all acceleration will cease. In a vacuum the object will continue to accelerate.
