Newtons First Law

http://daniellbohnhof.com/wp-content/uploads/2013/05/longboard_sunset_daniell_bohnhof.jpg
As Spif longboards into the sunset he is thankful for the ease with which he can travel long distances with very little effort. As he kicks the ground to push himself forward he coasts along for several seconds before feeling the need to kick again. Spif realizes that the reason he is allowed to coast along the way he has been is due to a phenomenon referred to as Newtons First Law. "Every object in a state of motion tends to remain in that state of motion unless an external force is applied to it." Spif then regrets his decision to bring friction back into his system as rolling friction, while slight, is the only force stopping him from simply rolling along until he reaches his destination.

http://www.nachi.org/images10/treehouse.jpg
Tired and exhausted from a long day of longboard and calculations Spif arrives home and reflects on his sources of information.
Citations

Title Page
What is a longboard?
Potential Energy
Friction