Busy. Please wait.
or

show password
Forgot Password?

Don't have an account?  Sign up 
or

Username is available taken
show password

why


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
Know
remaining cards
Save
0:01
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:
Retries:
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

Forces

Revision of Forces chapter

QuestionAnswer
What is a force? Something which causes an object to change its speed or accelerate.
What units are forces measured in? Newtons
List some examples of forces. Electrical, magnetic, push, pull, friction, gravity, tension, stretching, twisting, compression
What is friction? A force that opposes motion between two bodies in contact with one another.
Give two advantages of friction. Warm hands on a cold morning, allows tyres to grip the road.
Give two disadvantages of friction. Wear and tear of machinery parts, causes the wear of car and bike tyres
List one way of reducing friction. Lubrication
What is Hooke's Law? The extension in a spring is directly proportional to the force causing the extension.
Describe the graph you would get when verifying Hooke's Law. Straight line graph through the origin
What is work? When a force moves an object by a certain distance, work is done. (W = F.d)
What are the units of work? Joules
Created by: joeykenn