Transcript Force Motion

Force, Energy & Motion
Science
Things around you that you
can use to describe motion
frame of
reference
Motion that is described based
on a frame of reference
Relative motion
Metric unit of force
newton
Measure of the force of gravity
on an object
weight
Force that keeps two objects
that are touching each other
from sliding past each other.
friction
Describes a certain place
position
Any change in position
motion
Measure of an object’s change
in position during a unit of time
speed
any push or pull
force
Change in the speed or
direction of an object’s motion
acceleration
Force that pulls all objects
toward each other
gravity
To find a runner’s speed, you
need to know the distance he or
she ran and the -
time it took
When you watch a football
game from a seat near the top
of the stadium, your position
and all the things around you
are part of your-
Frame of
reference
When you push a grocery cart,
you are exerting -
force
Motion is stopped and started
by-
forces
Riding down a hill on your
bike, slowing down, and
turning are all examples of-
acceleration
To go faster on a skateboard,
you need to push it with more
force or push with the same
force for-
a longer time
To measure force, you can use a
-
spring scale
What can you pick up by
exerting just 1 newton of force?
an apple
Energy may exist in many
states. Two of them are -
kinetic and
potential
Kinetic energy is the energy of-
motion
Potential energy is -
stored energy
The greater the force -
the greater the
change in
motion will be
The more massive an object-
the less effect a given
force will have on an
object
Friction creates-
heat
(and resistance)
Unless acted upon by a
_______, objects at motion tend
to stay in motion and objects at
rest tend to stay at rest.
force
potential
energy
kinetic energy