Physicists use some basic terms when they look at motion. How fast an object moves, its speed or Velocity, can be influenced by forces. (Note: Even though the terms 'speed' and 'velocity' are often used at the same time, they actually have different meanings.) Acceleration is a twist on the idea of velocity.
Expungement is the legal process by which a court removes or erases all records of a criminal conviction, even if it is a felony conviction. Your conviction will not simply disappear on its own even if you wait 10 or 20 years - you have to take action (see how long does a felony stay on your record).
Law Offices of Mark T. Lassiter > FAQs > How Long Class B Misdemeanor Expunged. Most Class B misdemeanors can be expunged after two years. This means that once the person completes his or her jail sentence or community service or whatever the judge assigned, he or she must wait for two years before the record can be expunged.