Force can exert over distance {energy}|. Energy is scalar, because motion component does not matter since force vector and distance vector have same direction. Net force can act over distance in direction {work, energy}. Forces can act over distances in all random directions {heat}. Heat has no net force. Forces must act for some time over some distance, so energy can exchange and motion can change.
Physical Sciences>Physics>Dynamics>Energy
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Date Modified: 2022.0224