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12- Newton's Laws of Motion
Holt Rinehart & Winston
13
Physics
8th Grade
05/23/2011

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Term
Newton's First Law of Motion
Definition
An object at rest remains at rest
An object in motion keeps its velocity unless it expreiences a net force
Term
Newton's Second Law of Motion
Definition
The unbalanced force acting on an object equals the objects mass X acceleration
Term
Newton's Third Law of Motion
Definition
For every action force,there is an equal and opposite reaction force.
Term
Ex. of Newton's 1st Law
Definition
Bowling ball keeps rolling in the same direction unless it starts rolling on carpet because carpet has a net force
Term
Ex. of Newton's 2nd Law
Definition
If you push a sled with a smaller mass on it there will be a greater acceleration
Term
Ex. of Newton's 3rd Law
Definition
The action force is the swimmer pushing the water backward.
The reaction force is the water pushing the swimmer forward.
Term
Law of Universital Gravitation
Definition
All objects in the universe attract each other through the force of gravity.
Term
Gravity
Definition
The force acting between all objects in the universe.
Calculated by weight.
Term
Weight
Definition
The measure of the gravitational force excerted on an object
Term
Vertical and Horizontal
Definition
2 Components of Projectile motion.
Term
Momentum formula
Definition
mass X velocity
Term
Force
Definition
mass X acceleration
Term
Law of Conservation of Momentum
Definition
The total amount of momentum in an isolated sustem is conserved.
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