Sounds of impacts or collisions preferentially described by their acoustic properties, rather than by immediately referring to their assumed source object(s).
The sound of a partially rigid object forcefully striking another object, which may be preceded by the sound of the rapid, driven motion of one object (as of a baseball bat hitting a ball).
The sound of an elastic, non-destructive collision in which one or both objects spring back. Depending on the situation, there may be multiple such collisions in a characteristic pattern, as of a ball bouncing.
The noisy sound of a flexible surface, such as a flag, moving back-and-forth in the air and optionally coming into contact with an adjacent hard surface.