I've been doing basic physics and i understand that to describe the Kinematics or trajectory/movement of things, we use the relationship between position, displacement, velocity, acceleration, and time while to describe the Dynamics or cause of motion, we use the relationship between mass, acceleration, force, distance, energy, work, and time both when combined will fully describe the mechanics or 'how stuff moves'. but i'm lost at energy. what is it? i understand is a force is a push or pull, there's only 4 fundamental forces in the universe: gravity, electromagnetic, strong and weak nuclear force. but what is this energy? - is it like the means to generate a force? - is it like the blood in your body to fuel a punch or a kick? - is it like money that a company needs to operate? now this work thing. are you saying that... since energy is like this internal thing, this much energy can only do so much work. - this amount of energy can generate a force over some distance? - this amount of blood can generate a punch or kick over some distance? - this amount of money can sustain a company over some distance? and therefore power is... the rate of work... so - this amount of force over some distance every unit of time? - this punch or kick over some distance every unit of time? - this company operating some distance every unit of time? .... please clarify thankS!