Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

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.
We do not share your email address with others. It is only used to allow you to reset your password. For details read 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.
Don't know
remaining cards
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
restart all cards
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

Momentum and Energy

Quick Introduction

Collision – elastic a collision that conserves kinetic energy and momentum
Collision – inelastic a collision the some kinetic energy is changed into heat, light, sound, deformations...; momentum still conserved
Conservation of p the sum of all momenta of the particles of a system is unchanged after an event (explosion or collision)
Energy the ability to make changes
Energy a condition of an object or system of objects; scalar quantities (no direction); unit in Joules; 1 J = 1 N-m = 1 kg-m2/sec2
Energy – gravitational gravitational potential energy is energy stored in an object-earth system because work was done “against” gravity
Energy – potential “Stored” energy; energy created because a force “acted” through a distance; stored in a system of objects
Energy – types kinetic, gravitational potential, heat, light, sound, electromagnetic radiation, high speed particles, etc.
Energy – Work a transformation mechanism for changing one mechanical energy into another (kinetic to potential) or to heat
Energy – Work theorem The change in kinetic energy is due to the work done on a moving object
Impulse change in momentum (change in p)
Impulse – due to force change in momentum due to a force “acting” for a time period
Momentum “quantity of motion”; vector quantity; one of the properties of matter
Newton’s 3rd Law the change in p of one object during an interaction equals the change in p of the other object except in opposite direction
Power Rate of work being done; units are “watts” 1 watt = 1 Joule/sec = 1 kg-m^2/sec^2
Created by: brownglarry