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).
Adult Criminal Record. Expungement for non-conviction records is automatic in Pennsylvania if no disposition is indicated after 18 months. Expungement is available in Pennsylvania for summary offenses after 5 years, underage drinking offenses, probation cases without verdict for non-violent, first-time drug offenses and violations.