Ch. 2 & 3 Vocab Terms Flashcards
occurs when an object changes in position
motion
speed of an object with direction
velocity
distance and direction of an objects final position from its initial position
displacement
speed
the distance and object travels per unit of time
total distance an object moves over total time
average speed
speed at a single instance of time
instantaneous speed
speed at a single instance of time
instantaneous speed
property of a moving object that depends on the object’s mass and velocity
momentum
acceleration
change of velocity of an object over time
any object moving through the air
projectile
force
any push or pull on an object
forces that are equal in size but opposite in direction and do not cause a change in motion
balanced force
forces that are not equal in size, not opposite in direction and do cause a change in motion
unbalanced force
the sum of all forces acting on an object
net force
friction
force that opposes the motion between 2 surfaces in contact
is an attractive force between any 2 objects that depends on the mass of the objects and distance between them
gravity
freefall
when an object falls due to gravity free air resistance
weight
measurement of gravitational force exerted on an objects mass
amount of matter in an object
mass
inertia
tendency of an object to resist any change in motion
centripetal force
force that causes an object to move in a curved path
force that opposes the motion of objects moving through air
air resistence
highest velocity an object will reach as the object falls due to gravity
terminal velocity
g is
universal gravatational constant
on earth its always 9.8 m/s²
