Term

Definition
Interaction between two objects. 


Term
FORCE DIAGRAM
(definition) 

Definition
Graphical representation used by physicist while analyzing the forces exerted on objects by other objects. 


Term

Definition
Definition: Amount of matter in an object.
Symbol: m
Units: kilograms (kg) 


Term

Definition
Definition: Acceleration of an object due to the Force that Earth exerts on the object.
Slope of the F_{EonO} vs. Mass graph
Always 9.8 m/s^{2} on Earth
Symbol: g
Units: m/s^{2 } 


Term

Definition
Definition: Force exerted by Earth on any object.
Symbol: F_{EonO}
Direction: Always down towards the center of Earth
Units: N (Newtons) 


Term
FORCE OF EARTH
(math model) 

Definition


Term

Definition
Definition: Force requiered to stretch a spring by one meter ( 1 m )
Slope of the F_{SonO} vs. DL graph
Symbol: k
Units: N/m



Term

Definition
Definition: How much a spring stretches or compresses beyond its relaxed length.
Symbol: DL
Units: meters (m) 


Term

Definition
Definition: Force exerted by a spring on any object.
Symbol: F_{SonO}
Direction: Always in the direction of the spring.
Units: N (Newtons) 


Term
FORCE OF THE SPRING
(math model) 

Definition


Term

Definition
Definition: Force exerted by any surface that supports an object.
Symbol: F_{N}
Direction: Always perpendicular to the surface (90° angle)
Units: N (Newtons) 


Term

Definition
Definition: Force exerted by any string, rope, thread, lasso, etc.
Symbol: F_{T}
Direction: Always in the direction of the string.
Units: N (Newtons) 


Term

Definition
Magnitude (number) of the Force that Earth exerts on an object.
Example: the mass of an apple is 0.5 kg.
F_{EonA} =  4.9 N
Weight = 4.9 N 


Term

Definition
How humans perceive the force of Earth on an objects.
An object with a big mass will feel heavier than an object with a small mass (it will feel lighter). 


Term

Definition
MASS is the amount of matter in an object (measured in kg).
WEIGHT is how much force Earth exerts on that mass (measured in N). 


Term

Definition
All forces are balanced
The objects moves with constant velocity (including v = 0 m/s)
The acceleration of the object is 0 m/s2 


Term

Definition
Definition: Sum of all objects exerted on an object.
Symbol: SF
Direction: Always in the direction of the unbalanced force
Units: N (Newtons)



Term
NEWTON'S FIRST LAW OF MOTION 

Definition
 Unless an unbalanced force is exerted on an object. The object will continue moving with constant velocity.



Term
NEWTON'S SECOND LAW OF MOTION


Definition
The acceleration of an object is directly proportional to the acceleration of the object.
The acceleration of an object is inversely proportional to the mass of the object.
Newton’s second law is a cause/effect relationship because an unbalanced force will cause an acceleration (no the other way around). 


Term
NEWTON'S THIRD LAW OF MOTION


Definition
When two objects interact, object A exerts a force on object B. In turn, object B exerts a force on object A.
These two forces are equal in magnitude, but opposite in direction. 


Term
COEFFICIENT OF KINETIC FRICTION 

Definition
Definition: Ratio between two forces F_{K} & F_{N}.
Slope of the F_{K} vs. F_{N} graph
Symbol: µ_{K}
Units: (no units) 


Term
FORCE OF KINETIC FRICTION 

Definition
Definition: Force exerted by any surface that opposes the motion of the object.
Symbol: F_{K}
Direction: Always parallel to the surface (0° angle)
Units: N (Newtons) 


Term
FORCE OF KINETIC FRICTION
(math model)


Definition

