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.
The ATP-PC System. If you train any of your clients at high intensity you must understand how this energy system works. Here's a short(ish) explanation... As the name suggests the ATP-PC system consists of adenosine triphosphate (ATP) and phosphocreatine (PC).This energy system provides immediate energy through the breakdown of these stored high energy phosphates.If this energy system is 'fully stocked' it will provide energy for maximal intensity, short duration exercise for between10-15 seconds before it fatigues.here are only a few steps involved in the ATP-PC which is why it provides energy so quickly. S teps of the ATP-PC system: 1. Initially ATP stored in the myosin cross-bridges (microscopic contractile parts of muscle) is broken down to release energy for muscle contraction.