If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

To log in and use all the features of Khan Academy, please enable JavaScript in your browser.

Main content

Unit 3: Forces and Newton's laws of motion

300 possible mastery points

Mastered

Proficient

Familiar

Attempted

Not started

Quiz

Unit test

About this unit

This unit is part of the Physics library. Browse videos, articles, and exercises by topic.

Newton's laws of motion

Learn

Practice

Newton's first lawGet 5 of 7 questions to level up!
Newton's third law of motionGet 5 of 7 questions to level up!
All of Newton's laws of motionGet 5 of 7 questions to level up!

Quiz 1

Level up on the above skills and collect up to 240 Mastery points

Normal force and contact force

Learn

Balanced and unbalanced forces

Learn

Slow sock on Lubricon VI

Learn

Inclined planes and friction

Learn

Tension

Learn

Treating systems

Learn

Up next for you:

Unit test

Level up on all the skills in this unit and collect up to 300 Mastery points!