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Science CH 11 notes
notes
12
Science
8th Grade
10/19/2012

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Term
a push or pull
Definition
force
Term
What is the cominationof all the forces action on an object?
Definition
net force
Term
What is it called if the net force actiong on an object is zero, the object remains at rest, or if the object is already moving, continues to move in a straight line with constant speed?
Definition
Newton's 1st Law of Motion
Term
What is the type of friction that prevents an object from moving when a force is applied?
Definition
static friction
Term
What slows down an object that slides?
Definition
sliding friction
Term
What do you have to do to overcome the froce of sliding friction?
Definition
you have to keep pushing
Term
When does acceleration occur
Definition
anytime an object speeds up, slows down, or changes its direction of motion
Term
According to what does an object acted upon by a force will accelerate in the direction of the force?
Definition
Newtion's 2nd Law of Motion
Term
Newton's second law of motion calculates what?
Definition
acceleration
Term
Force exerted while going in a circle that is pointed to the center is called?
Definition
centripetal
Term
What is a form of friction that acts to slow down any object moving in the air?
Definition
air resistance
Term
What happens to air resistance if a force gets faster?
Definition
it gets larger
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