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Forces
Chapter 5 Forces
11
Science
9th Grade
11/21/2011

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Term
Force
Definition
A push or a pull.
Term
Pound
Definition
English unit of force equal to 4.448 Newtons.
Term
Newton
Definition
SI unit of force, equal to the force needed to make a 1 kg object accelerate at 1 m/s/s.
Term
Tension
Definition
A pulling force that acts in a rope, string, or other object.
Term
Friction
Definition
Force that opposes motion
Term
Net Force
Definition
Sum of all forces acting on an object.
Term
Balanced Forces
Definition
Combined forces that result in a zero net force on an object.
Term
Equilibrium
Definition
State in which the net force on an object is zero.
Term
Normal Force
Definition
The force a surface exerts on an object that is pressing on it.
Term
Free-Body Diagram or Force Diagram
Definition
A diagram showing all forces acting on an object.
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