Forces
Newton's First and Second Laws
Third Law and Momentum
Universal Forces
Extra
100
Two units used for force
What is Newton and kg m/s^2
100
The tendency of an object to resist a change in its motion
What is inertia
100
Every action has a ______ and opposite ________
What is equal, reaction
100
______ force and ______ force are the only forces that can both attract and repel
What is Electric, magnetic
100
When an _______ force acts on an object, the object ______
What is unbalanced, accelerates
200
Overall force acting on an object after all the forces are combined
What is net force
200
Equation for Newton's Second Law
What is a=F/m
200
Equation for momentum
What is Momentum= mass x velocity
200
A powerful force of attraction that acts only on the neutrons and protons in the nucleus, holding them together
What is strong nuclear force
200
Fluid friction acting on an object moving through the air
What is air resistance
300
_______ forces have a net force of zero and therefore no motion occurs
What is balanced
300
The force of gravity acting on an object
What is weight
300
If no net force acts on a system, then the total momentum of the system does not change
What is law of conservation of momentum
300
An attractive force that acts only over a short range
What is weak nuclear force
300
The motion of a falling object after it has been given an initial forward velocity
What is projectile motion
400
Four types of friction in order of decreasing force and examples of each
What is static (potted plant), sliding (sliding a pot across a surface), rolling (ball bearings), fluid (air resistance)
400
An object will remain unmoving unless a ______ is applied
What is force
400
In a closed system, the loss of momentum of one object equals the _____ in momentum of another object
What is gain
400
An attractive force that acts over large distances
What is gravitational force
400
Mass is a measure of _______ Weight is a measure of ________
What is inertia, force of gravity acting on an object
500
The constant velocity of a falling object when the force of air resistance equals the force of gravity
What is terminal velocity
500
Equation for weight
What is W= mg
500
An object has a ______ momentum if the product of its mass and velocity is large
What is large
500
What causes tides to occur
What is gravity from the moon leads to the tides on Earth
500
Newton's 3rd Law is also know as ______ and ______
What is action, reaction
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