Mostly they are "ready" to start, containing an excess of potential energy. After beginning gradually start transform the potential energy into kinetic, the action continues until finishing
Mawingu Wao ni "tayari" kwa kuanza, zenye ziada ya nishati Potential. Baada ya kuanza kwa mwanzo hatua kwa hatua kubadilisha Potential ndani ya nishati Kinetic, hatua mpaka kumaliza Continues