43 terms

physics vocab

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unbalanced force
a change in an object's state of motion is caused by an
newton
in the metric system, forces are measured in a unit called
inertia
is the property of an object which causes it to resist all changes in its state of motion
force
a _________ is an interaction between two objects
accelerated
an object is _______ when an unbalanced force acts on it
mass
acceleration of an object varies directly with the applied force and inversely with the ______ of the object
weight
is the measurement of the gravitational force action on an object
sliding
static friction is greater than _______ friction
resultant
a _________ is the sum of two or more vectors
dynamic equilibrium
an object moving at a constant velocity is in a state of
static equilibrium
an object at rest is in a state of
air resistance
the amount of _____ a projectile encounters depends on the projectile's velocity and surface area
scalar
mass and speed are examples of _____ quantities
vector
acceleration and force are examples of ______ quantities
3rd law
although _____ forces have the same magnitude and act in opposite directions, they cannot cancel each other since they act on different objects
terminal velocity
when the air resistance a projectile encounters as it is falling equals its weight, it reaches _____
free body diagram
a graphical technique used to illustrate all of the forces acting on an object
direction
objects are accelerating if there is either a change in their rate of motion, that is, their speed, or of there is a change in their _______ of motion
same
2nd law forces are forces which act on the _______ object
weight
in free fall, the only force acting on an object is the pull of gravity. This force is measured quantitatively by the object's ________
newton
______ and Galileo contributed most to our understanding of motion
kinematics
__________ is the study of motion without regard to forces
dynamics
__________ is the study of the relationships that exist between forces and the motion of objects
stronger
electromagnetic forces are ________ than gravitational forces
unbalanced force
unless acted upon by a(n) ___________, an object at rest or in a state if uniform motion will remain at rest or in uniform motion
accelerated
an object is ______ when an unbalances force acts on it
newton
a net force of one _______ gives a mass of 1 kg an acceleration of 1 m/s^2
mass
acceleration of an object varies directly with the applied force and inversely with the _______ of the object
mass
_________ depends upon the amount of matter in an object and is independent of the location of the object
gravitational
the ______________ method of measuring mass is easier and more widely used than the inertial method
friction
is a force that opposes the motion of an object
normal
the force of friction depends upon the type of surfaces in contact and the _________ force
greater
static friction is ______________ than kinetic friction
equal and opposite force
complete the following statement: " every force is accompanied by a(n) _________________"
force applied
Fa
force of gravity (weight)
Fw
normal force
Fn
frictional force
Ff
air resistance force
Fair
tension force
Ft
spring force
Fs
upward force
Fup
coefficient of friction
μ