Forces and Newton’s law of motion

Study for your test

What is a force?

A push or pull

What is a net force?

The combination of all forces acting on an object

Balanced force

Forces combine and give zero net force

Unbalanced force

Produce nonzero net force

Gravitational force

Force between 2 objects

Electromagnetic force

Includes electric and magnetic forces

Nuclear forces

Forces within nucleus of atom. Holds protons and neutrons together

Frictional force

Tend to stop the objects motion by dispersing its energy as heat

Examples of frictional forces

Sliding, Rolling, static

Newtons 1st Law

Object at rest will stay at rest and an object in motion will stay in motion unless acted upon by a outside force

Law of INERTIA

The tendency of an object to resist a change in motion. AKA NEWTONS 1st LAW

Newtons 2nd Law

The unbalanced force acting on an object equals the objects mass acceleration F=MA

Newtons 3rd Law

For every action force there is an equal and opposite reaction force. Example is a rocket ship or a swimmer

Mass

The amount of matter in an object(THIS DOES NOT CHANGE)

Weight

Force of gravity acting on an objects mass; changes based on its location

Free fall

The Only force acting on an object is the earths gravity; in the absence of mass all objects accelerate toward earths surface at the same rate regardless of mass

Terminal velocity

When an object stops accelerating due to weight and air resistance being equal- W=MG