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Force
The push or pull of an object.
Net Force
The total amount of force applied on an object.
Balanced Force
Occurs when the same amount of force is applied from opposite directions resulting in a net force of 0.
Unbalanced Force
Occurs when more force is applied in one direction, causing movement.
Contact Force
A type of force that requires contact between two bodies to be applied.
Non-Contact Force
A type of force that can be applied without any physical contact.
Thrust
Force acting perpendicular to a surface.
Pressure
The thrust acting per unit area.
Liquid Pressure
Pressure exerted on the walls of a container by a liquid.
Atmospheric Pressure
The weight of the air that exerts thrust pressure on the Earth’s surface.
Gravitational Force
A non-contact force that acts between masses.
Frictional Force
A contact force that opposes the motion of an object.
Muscular Force
A contact force exerted by muscles.