air resistance
the friction between an object and particles in the air
average speed
determined by dividing the trip distance by the total time of the trip
balanced forces
exist when all the forces acting on an object result in the object staying at rest or moving at a constant speed in the same direction
contact force
a push or pull that touches or comes in contact with an object to change motion
direction
the path along which something moves, lies, or points
distance
a measurement of how far from each other two points or places are
force
is a push or a pull on something
friction
a force that acts on an object when it rubs against another object or material
graph
is a representation of data plotted on an x-axis and y-axis
gravity
a force where on object pulls on another object
instantaneous speed
how fast an object moves at a certain point in time
load
the object to be moved by the simple machine
mass
the measure of the amount of matter in an object
motion
the changing of position of an object
Newton
a metric unit used to measure the force applied to objects
non-contact force
a push or a pull that does not touch an object to change motion
point of reference
a background or non-moving object in the background used in describing the motion of another object
speed
the measurement of how fast an object travels from one point to another
spring scale
is used to measure the approximate weight, or the pull of gravity on an object
time
the measurement of the period between events
unbalanced forces
exist when all the forces acting on an object result in a change of motion of the object
variables
the properties of things that can change, be changed, or vary in an investigation
weight
the measure of the amount of gravity pulling on an object