unbalanced forces cause a change in -------- by changing the object's ------- or -------.
Unbalanced forces cause a change in movement by changing the object's speed or direction. When two or more forces act on an object in different directions or with different magnitudes, and the net force is not zero, these forces are considered unbalanced. The resulting unbalanced force then accelerates the object, causing a change in its speed or direction of motion.
To determine how unbalanced forces cause a change in an object's motion, we need to consider Newton's second law of motion. This law states that the acceleration of an object is directly proportional to the net force applied on it and inversely proportional to its mass. Mathematically, this can be represented by the equation F = ma, where F is the net force, m is the mass of the object, and a is the acceleration.
If an object experiences an unbalanced force, it means that the net force acting on it is not zero. As a result, the object will accelerate in the direction of the net force. The magnitude of the acceleration will depend on the ratio between the net force and the mass of the object. This acceleration can either increase or decrease the object's speed, or it can change the direction of its motion, or both.
Therefore, it is the unbalanced forces acting on an object that cause changes in its speed or direction by accelerating it in the direction of the net force. To understand the specific changes in speed or direction, one needs to know the magnitudes and directions of the individual forces acting on the object and apply Newton's second law of motion.