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# Gr 8 Chapters 3 & 4

### Motion, Forces, Acceleration, and Newton's Laws

What is a push or pull on one object created by another Force
Where two forces are pushing or pulling at an equal value Balanced force
Where on force is stronger or weaker than the other Unbalanced force
A force that resists motion Friction
Velocity at the beginning subtracted from the final velocity Net Force
The action of friction that slows something falling through the air Air Resistance
The frictional resistance a stationary object must overcome in order to be set in motion Static Friction
•is a force that manifests the tendency of two surfaces to not slip, slide or rub against each other Sliding Friction
An object at reast stays at rest unless a force acts on it; the law of inertia Newton's First Law of Motion
The acceleration of an object is in the same direction as the net force applied on the object Newton's Second Law of Motion
When one object applies a force on a second object, the second object applies a force of equal strength and opposite direction Newton's Third Law of Motion
The attractive force between any two objects Gravity
The action or process of moving or of changing place or position; movement Motion
Rapidity or speed of motion Velocity
the rate of change of velocity over time Acceleration
the force that gravitation exerts upon a body Weight
force or speed of movement; impetus, as of a physical object or course of events momentum
Created by: smuehleisen