Unbalanced forces are important in order to move anything. An object under balanced forces does not move. For example as you sit in your chair reading this, gravity is exerting a force on your body downwards but your chair balances this force by exerting a force upwards on you that is equal and opposite to the force of gravity. These two forces oppose each other and therefore you do not move. In tennis in order to change the direction of a tennis ball you need to exert a net force(an unbalanced force) in the direction you want the tennis ball to move. In tennis there are also unbalanced torques(a force acting at a distance from a pivot point) on the ball that cause the ball to spin. Hope that helps.
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Unbalanced forces in volleyball occur when one team applies more force than the other, leading to the ball moving in the direction of the stronger force. This can happen during serves or spikes when one team exerts more power, causing the ball to be hit harder or faster towards the opposing side. Players need to anticipate and react to unbalanced forces to maintain control of the game.
When a volley ball hit by a player, the forces on the ball are not balanced, and the ball will accelerate in the direction of the force of the contact with the ball.
(Even when the ball is in midair, the forces are not balanced because of gravity. In this case, the ball will accelerate down.)
-- A group of two or more forces is unbalanced when the vector sumof its individual component forces is not zero.-- A group of two or more forces is balanced when the vector sumof its individual component forces is zero.Notice that it's not the forces that are balanced or unbalanced.It's the whole group of them that's balanced or unbalanced.
Both balanced forces and action-reaction forces involve forces acting in opposite directions. Balanced forces result in no change in an object's motion, while action-reaction forces involve pairs of forces that occur simultaneously between two objects in contact.
unbalanced forces.
Forces (plural) are balanced if their vector sum is zero. Since an unbalanced force causes an acceleration, if an object isn't accelerating then the forces on it are balanced.
Unbalanced forces occur when the forces acting on an object are not equal in size and opposite in direction. This results in a net force on the object, causing it to accelerate in the direction of the larger force. Unbalanced forces are responsible for changes in an object's motion.