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Vocabulary Foldable
FORCE
A
PUSH or PULL.
SPEED
The
rate at which someone or
something is able to move or
operate.
ACCELERATION
Increase
in the rate of speed of
something.
VELOCITY
Speed
and direction.
INERTIA
A
tendency to do nothing or remain
unchanged.
UNBALANCED FORCE
When
unequal forces cause objects
to move.
BALANCED FORCE
When
2 equal forces act on an
object.
Generally, does NOT move.
FRICTION
Resistance
when an object moves
over another surface.
WORK
Amount
force.
of energy transferred by a
Speed vs Acceleration
What is speed?
 The
rate at which someone or
something is able to move or operate.
What is acceleration?
Increase
in the rate or speed of
something.
How can I calculate speed?
Average
Speed = Distance
Time
Graph what acceleration looks like on a
distance/time graph:
Motion of a Line
Describe the motion:

Constant Speed

(Never changes speed)
Describe the motion:
 Object
is NOT
moving.
 Time
is changing,
but distance is
not.
Describe the motion:
 Object
is
ACCELERATING.
 Getting faster!
Describe the motion:
 Object
is turning
around and
headed back to
its starting
location.
Average Speed Examples
A quarterback throws a football 40 yards in 4
seconds. What is the average speed of the
football?
 Average
Speed = Distance
Time
What is the average speed of the runner
at 4 sec?
A plane flies from Houston to NYC in 4 hours.
The distance it travelled was 1627 miles.
What was the average speed of the plane?
What is the average speed of the boat
between 4 and 6 minutes?