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Level 26

Forces in One Dimension


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external world
everything surrounding a system that exerts forces on it is the _______.
Gravitational Force
(physics) the force of attraction between all masses in the universe
Newton's First Law (Law of Inertia)
An object that is at rest will remain at rest, and an object that is moving will continue to move in a straight line with constant velocity, if and only if the net force ac…
force
(interactions between two objects)
Field Force
A force exerted on an object without touching it
interaction pair
two forces that are in opposite directions and have equal magnitudes are a(n) _______.
tension
a force exerted by any segment of a rope or string on an adjoining segment is _______.
net force
Acceleration depends on the
equilibrium
1)starting point of SHM, object is in _______, fnet equals zero
drag force
a force exerted by a fluid on an object moving through the fluid is a(n) _______.
Newton's Second Law (Law of Acceleration)
The acceleration of a body is directly proportional to the net force on it and inversely proportional to its mass. This is a statement of _______.
apparent weight
the force exerted on a scale by an object and other forces acting upon the object is the _______.
Contact force
A force that "touches" or comes in contact with the system
Newton's Third Law
All forces come in pairs. The two forces in a pair act on different objects and are equal in strength and opposite in direction.
normal force
a perpendicular contact force exerted by a surface on another object is a(n) _______.
system
A collection of components organized to accomplish a specific function or set of functions.
inertia
_______ is the property of an object that leads it to resist any change in motion
Agent
The source of the force
Free body diagram
A diagram that shows all forces acting on an object, with proper relative magnitudes and directions for objects
Terminal Velocity
Greatest velocity an object can reach is called _______.
Weightlessness
a condition encountered in free-fall wherein a support force is lacking
True
True or False: The bigger the molecule, the more disordered it is.
False
(T/F) Tycho Brahe was a Danish astronomer who confirmed Copernicus's theories by making many observations with his telescope.
weight
A force that comes from gravity pulling down on any object with mass
9.8m/s^2
the magnitude of acceleration due to gravity
g
(a) Abbreviation for gram. (b) When a lowercase italic g, the symbol for the acceleration due to gravity (at Earth's surface, 9…
mg
expression for the weight of an object
Newton
(kg*m)/(s*s)
mass
a body of coherent matter, usually of indefinite shape and often of considerable size
opposite direction as
A fluid exerts a drag force on an object moving through it in the _______ motion of the object
more
a light object with a large surface area is (more/less) affected by the drag force than a more compact object is when both objects are falling
drag force is equal to gravity
the terminal velocity of a falling object is reach when _______.
Newton's first law
An object at rest remain and an object in motion remains in motion UNLESS it experiences an unbalanced force. Also called the Law of Inertia.