Advertisement Upgrade to remove ads

Newton's First Law

An object in motion will stay at a constant velocity unless acted upon by an unbalanced force (also known as the Law of Inertia)


The tendency of an object to resist a change in motion, (depends on the objects mass)

Newton's Second Law

Acceleration depends on net force and the objects mass

Formula for Acceleration

Acceleration = Net force/Mass

Unit for Acceleration


Unit for net force


Unit for Mass


Newton's Third Law

For every action there is an equal and opposite reaction


Mass x Velocity

Unit for Momentum

kg x m/s

Unit for Velocity


Conservation of Momentum

Momentum is always conserved unless acted upon by an outside force


A push or pull

2 Characteristics of force

Depends Direction and Magnitude
(2 characteristics of ____)

Formula for Weight

Mass x Acceleration


Force exerted on a person or object at the surface of the planet


A force that pulls objects toward each other

2 things that effect gravity

Both Mass and distance.
(two things that effect _____)

Net force

Combination of all forces acting on an object

Balanced forces

Equal forces acting on an object in opposite directions

Unbalanced forces

Whenever a net force is acting on an object


A force that two surfaces exert on each other

Static Friction

A force that acts on objects not moving

Sliding friction

A force when objects slide over each other

Rolling friction

Force when object rolls across surface

Fluid friction

when a solid object moves through liquid

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions above and try again


Reload the page to try again!


Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

NEW! Voice Recording