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Newton's Laws

TermDefinition
Newton's 1st Law an object at rest will remain at rest, and an object moving at a constant velocity, unless acted opon by an unbalanced force.
Newton's 2nd Law the greater the mass, the greater the inertia
force = mass x acceleration
acceleration = net force / mass
measured in Newtons (N)
Newton's 3rd Law for every action, there is an equal and opposite reaction
gravity a force that pulls objects toward each other
if you increase the force on an object, its acceleration decreases
if you increase the mass on an object, its acceleration stays the same
a resistance to a change in motion is inertia
the amount of inertia an object has depends on its mass
inertia the tendancy of an object to resist a change in motion
speed = distance / time
steeper slope = faster acceleration
gravity = 1. mass 2. distance
what is the name given to the force exerted by the first object on a second object? reaction force
what is the name often given to the force exerted by the second object back on the first object? action force
the action and reaction forces in any situation will always be equal and opposite
the product of an object's mass and veloctiy is its momentum
momentum = mass x velocity
the unit of measurment for momentum kg x m/s
law of conservation of momentum in the absence of outside forces, the total momentum of objects that interact does not change.
another name for Newton's 1st Law the law of inertia
what forces cause an object to accelerate unbalanced forces
acceleration depends on force and mass
reactions always go in the ... direction of the action opposite
an action and its reaction are equal in size
Newton's 3rd Law explains what happens when two objects interact
forces always come in pairs so each ... has a reaction action
the force of an action sends a reaction in the opposite direction
Created by: heather1182
 

 



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