Busy. Please wait.
Log in with Clever

show password
Forgot Password?

Don't have an account?  Sign up 
Sign up using Clever

Username is available taken
show password

Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
Didn't know it?
click below
Knew it?
click below
Don't Know
Remaining cards (0)
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

newton's laws

1st law law of inertia
inertia tendency of an object NOT to accelerate
when the external force is zero... it's acceleration i s zero
objects in motion or rest will stay in motion or at rest UNLESS... acted on by an external force
mass is a measure of inertia
inertia is a measure of mass
inertia is NOT... a measure of weight
weight... is a measure of local gravity on mass
net external forces are... vector sum of all forces acting on an object
the net external forces are...` F(friction), F(gravity), F(normal), F(applied)
equilibrium... condition in which net external forces equal zero
2nd law law of impulse
impulse is... a force acting over a time
law of impulse is most often used for... collisions and impacts
the acceleration of an object us directly proportional to... the net force acting on the object and inversely proportional to the objects mass
F= ma
3rd law law of interaction
interaction is... when two or more objects act on one another
forces often exist in... pairs
net external force F(gravity)= weight, F(normal)=rxn to weight, F (application)=outside force, F(friction)= rxn to outside force
forces tend... to work in pairs
forces of friction dry, fluid, lubricated, skin, internal
dry friction static and kinetic
static friction resists against movement
kinetic friction resists while moving
fluid friction mostly related to chemicals
lubricated friction mostly related to engines
skin friction introduces drag and affects airplanes and swimmers
Created by: accident_prone
Popular Physics sets




Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
restart all cards