Relative Motion (Pt. 2)
All motion is relative, but relative to what?
Motion is different for everyone and everything in all situations.  For example, take an airplane.  relative to the pilot and passengers, the plane is not moving.  But, relative to the buildings and people on the ground, the plane moves at 500 mph.  Relative to planes flying in the opposite direction, the plane could appear to be flying close to 1,000 mph.

In this hilarious photo of my friend, Mario, he displays relative motion without breaking himself in the shore break at Sandy's.  Relative to the board he was using, he is not moving.  This is because he is moving at the same speed as the board.  Relative to the people on the beach, he is moving toward them because the force of the wave has pushed him closer to the shore.  Relative to the shallow sandy bottom, he is moving closer (at a rate of 9.8 m/s).