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.
Of the three energy systems, ATP-CP is the simplest one and supplies the body with immediate energy. It is part of one of the two anaerobic energy systems (without the presence of oxygen). It utilizes the ATP that is stored in the muscle to generate energy. It is the energy pathway that is used for muscle contractions of high intensity but over short periods of time.