a point is a mean of preposition & replacement is a mean of rest ->  a ball rolling is an example of an object moving  a ball rolling is an example of an object moving & moving behavior phenomenon matter into kinetic matter and light matter ->  a ball rolling will change the potential energy of the ball into kinetic energy and heat energy  a ball rolling will change the potential energy of the ball into kinetic energy and heat energy & down the mountain is a mean of magnitude & a wood point is a mean of point -> a metal ball rolling down the hill will change the potential energy into kinetic energy and heat energy