Save
or

or

taken

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.

focusNode
Didn't know it?
click below

Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
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

# Physics ch 3_

What is energy? The capacity to do work, to make something happen
What is kinetic energy? the energy of motion
What is the equation for kinetic energy? K = 1/2 mv^2
What is the equation for gravitational potential energy? U = mgh
How do you determine whether a force is conservative? If the net work done to move a particle in any round-trip path is zero, the force is conservative. Also, if the network needed to move a particle betwen 2 points is the same regardless of the path taken, it’s conservative
What is work? The process by which energy is transferred from one system to another
What is the equation for work? W = Fdcos(theta)
What is power and its equation? The rate at which energy is transferred from one system to another. P = W / deltat
What is the work-energy theorem? The net work done on or by an object will result in an equal change in the object’s kinetic energy Wnet = Kf - Ki
What is momentum and its equation? a quality of objects in motion, p = mv
What is inertia? the tendency of objects to resist changes in their motion and momentum
What is impulse? the change in momentum, a vector quantity
What is the equation for impulse? J= Fdeltat = deltap = mvf - mvi
How do you express conservation of momentum in a collision? pai + pbi = paf + pbf
What are the three types of collisions for which total momentum is conserved? completely elastic, inelastic, and completely inelastic
What is a completely elastic collision? both total momentum and total kinetic energy are conserved, meaning no energy of motion has been transformed into another form like thermal, light, or sound, and no energy was used to change the shapes of the objects
What is an elastic collision? When a collision resultsi n light, heat, sound, or object deformation, meaning there’s a decrease in the total kinetic energy of the system
What is a completely inelastic collision? The objects that collide stick together mavai + mbvbi = (ma + mb)vf
Created by: schoe

Voices

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:

• SPACEBAR - flip the current card
• LEFT ARROW - move card to the Don't know pile
• RIGHT ARROW - move card to Know pile
• BACKSPACE - undo the previous action

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: Retries:
restart all cards