Force & Newton's Laws Vocab

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Force

A push or pull on an object.

Net Force

The combination of all the forces on an object.

Balanced Forces

They cancel each other out and do not change an object's motion.

Unbalanced Forces

The motion of an object changes.

Friction

Force that resists sliding between two touching surfaces or through air or water.

Kinetic Friction

Friction that occurs when two objects in contact slide past each other.

Gravity

Attractive force between two objects; depends on the mass of the objects and the distance between them.

Weight

Gravitational force.

Air Resistance

A form of friction that acts to slow down any object moving through the air.

Drag

A force that opposes motion of an object when an object moves through a fluid.

Newton's 1st Law of Motion

An object will remain at rest or move with constant speed unless a force is applied.

Newton's 2nd Law of Motion

Connects force, acceleration, and mass; it explains that an object acted upon by a force will accelerate in the direction of the force; acceleration equals new force divided by mass.

Newto's 3rd Law of Motion

States that forces always act in equal but opposite pairs; for every action there is an equal and opposite reaction.

Applied Force

Force applied to an object.

Normal Force

Support force.

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