Summary Balanced forces are forces that are equal in size and opposite in direction. Balanced forces do not result in any change in motion. unbalanced. forces: forces applied to an object in opposite directions that are not equal in size. Unbalanced forces result in a change in motion. Speed is the distance traveled per unit of time. It is how fast an object is moving. Speed is the scalar quantity that is the magnitude of the velocity vector. It doesn't have a direction. Higher speed means an object is moving faster. Lower speed means it is moving slower. If it isn't moving at all, it has zero speed.Speed=s=d/t Moment is the turning effect of a force.M=FxD Pressure is the pushing effect of a force.Pressure in solids is Pressure being equaled to force/area.Pressure in liquids depend on depth .