Phase transitions in the collective motions of self-propelled particles are directly impacted both by the initial velocity of ...

The initial velocity of the ball must not exceed the limit specified under the conditions set forth in the Initial Velocity Standard for golf balls on file with The R&A and USGA.

Phase transitions in the collective motions of self-propelled particles are directly impacted both by the initial velocity of each particle, and the repulsive radius surrounding them.