Acceleration relates to marching band similar to how speed does. It's more focused on the tempo itself. It could also focus on the bands members themselves. But the tempo also affects the band members steps and how fast they play. So with tempo, it could become faster or slower, and that would be a change in speed. But with the band members, there steps and playing could become faster or slower. But there is another thing that could affect the change in acceleration of a band member. The direction also occur with acceleration. A band member could be going the same speed but they could change directions. Or they would be going the same direction and change their speed. No matter what they change it will always be a change in their velocity.
The formula of finding acceleration in an object is: