Force and Motion

An unbalanced force is a force that causes a change in the motion of an object. It occurs when the total forces acting on an object are not equal, resulting in acceleration.

The net force is the difference between the two forces. For example, if one person exerts 45 N to the left and another exerts 32 N to the right, the net force is 45 N - 32 N = 13 N to the left.

A force is a push or pull acting on an object that can cause it to change its velocity (speed or direction).

Friction is a force that opposes the motion of an object. It occurs when two surfaces come into contact with each other.

Acceleration refers to any change in the speed or direction of an object. It can occur when an object speeds up, slows down, or changes direction.

Inertia is the tendency of an object to resist changes in its state of motion. An object at rest stays at rest, and an object in motion stays in motion unless acted upon by an unbalanced force.

Gravitational force is the attractive force between two objects due to their mass. It pulls objects toward each other, such as the Earth pulling objects toward its center.

Balanced forces are equal in size and opposite in direction, resulting in no change in motion. Unbalanced forces are not equal, causing a change in motion.

Momentum is the product of an object's mass and its velocity. It is a measure of how difficult it is to stop a moving object.

Net force can be calculated using the formula: Net Force = Force1 + Force2 (considering direction).