is the force of the balloon's rubber pushing inward. Balanced forces is similar to an action/reaction force. The difference is each force acts on the same surface. An example would be the gas inside is pushing in the opposite direction of the balloons rubber surface. The balloons rubber is balanced because the force is pushing on the gas inside the balloon. When the balanced force becomes an unbalanced force it doesn't have a force of equal magnitude in the opposite direction. Therefore, the unbalanced force causes the material to move faster speed in the direction of the unbalanced force. An example is when the mouth of the balloon is open, the gas escapes from the mouth of the balloon which causes the balloon to move faster as the gas moves out of the opening. The direction is determined by the string and location of the balloon's mouth piece.
If you blow up a balloon and let go of the end it will fly around in different directions, but it probably won't travel as far in any one direction.
If it moves along a string it focuses the power from the balloon's air in a single direction, generating more concentrated thrust and helping it travel as far as possible in one direction. For the balloon's velocity, if the balloon is moving rightwards, then the velocity is moving rightwards also. The amount of speed is the rate at which an object covers distance. A fast-moving object has a high speed and covers a large distance in a short amount of time. A slow-moving object that has a low speed will cover a small amount of distance in the same amount of time. The force that moves the balloon to create velocity is the thrust when you let go of the balloon's mouth piece. Thrust can be created from your hand or controller. The movement that pushes the balloon forward will make it go farther.The air that shoots out from the balloon's mouth also pushes the balloon forward and creates some velocity.The change in velocity depends on the mass of the object. A force will cause a change in velocity and a change in velocity will generate a force. If there is no force acting on an object then the object will maintain a constant velocity. When velocity is zero the object remains at
rest.
If force is added, then the velocity will change because of the force.