Forces of motion
force
a push or pull
a force of attraction between two objects depending on the mass of those objects.
Newton
Unit used to measure a force (N).
balanced forces
When forces acting on each other equally and in opposite directions which cause no movement of an object
reference point
A fixed point that you may use to determine if something is moving.
motion
to change position
sliding friction
a force that resists motion as two things slide across each other
Newton's Second Law
An object will accelerate, depending on the object's mass, and the forces exserted on the object.
momentum
A measure of the motion of an object due to its mass and velocity.
speed
Distance an object travels in a certain amount of time.
average speed
The distance traveled over a certain period of time
friction
a force that resists motion by way of contact between two things
Newton's third law
For every action force, there is an equal but opposite reaction force
inertia
The tendancy of an object to resist movement or a change in movement.
formula for speed
S = d/t
Acceleration
a change in speed or direction
rolling friction
resistance of motion caused by a round object rolling across another object
Newton's First Law
In object at rest will stay at rest, and an object in motion will stay in motion unless acted upon by an unbalanced force.
static friction
Two objects not in motion due to their contact
distance-time graph
Graph with distance on the vertical axis and time on the horizontal axis plus it displays motion of an object over time.
velocity
the speed of an object in a particular direction
fluid friction
a force that resists motion of an object due to a liquid or gas
unbalanced force
When two forces acting on each other cause an object to move.
fluid
a liquid or a gas.
net force
total force acting on an object