a light year is the distance light will travel in a year which is a long long way light travels 186000 miles a second 300000 kilometers per second so a light second is 186000 miles 300000 kilometers
Best Answer: The ATP-PC system is use for around 10 seconds of an event, the ATP is use for 4-6 seconds before the creatine phosphate (CP) provides energy for a further 5 - 10 seconds. Weight lifting is the best example of a sport using the ATP-PC system.
1 Ad court - the part of the tennis court that is to the left of the tennis players. 2  Advantage - when a tennis player needs one more point to win the game after the score was deuce. 3  Alley - the extra area of the side court used for doubles.  ATP - stand for the Association of Tennis Professionals.