distance		is its location compared to other things
position		the ability to do work
motion		change in the velocity of an object over time
speed		is a force that opposes the motion of an object
velocity		description of a moving object's speed and direction
acceleration		how fast an objects's position changes with time at any given moment
force		the energy stored in an object or material
friction		energy of motion
inertia		length between two places
energy		is a change in an object's position compared to a fixed object
kinetic endergy		any push or pull on an object
potential energy		the tendency of a moving object to stay in motion at the same speed and in the same direction