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.
How ATP Provides Energy for Cells When you're active, your body needs energy. The food you eat provides the building blocks to keep your body healthy and active. But how does your body use food and stored energy to keep you running strong? ATP, the powerhouse molecule, provides the energy your body needs.