What is the acceleration of sound and what is the difference between acceleration and velocity? I was researching online the acceleration of sound but I found no answer. I want to calculate the force of sound using F=ma, but I could not figure out the acceleration of sound. Along with trying to solve this problem I began thinking the difference between acceleration and velocity. I know the v=m/s and a=m/s^2. But if could someone please expand on what acceleration is and the main difference between velocity and acceleration.