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Speed, Displacement, and Velocity
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chelsea valderama
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Cards (7)
DISPLACEMENT
distance in a given direction
VELOCITY
rate of change of displacement with respect to time
CONSTANT VELOCITY
moves in
straight
line
does not
speed
up
or
slow
down
(MANDATORY EXPERIMENT) MEASURING CONSTANT VELOCITY USING AN AIR TRACK
glider
and
card
,
air track
,
light gates
,
blower
air track should be
level
to
ensure
constant velocity
the scalar timer
records the time it takes for the card to pass through
,
therefore we must measure the
length
of the card
use formula velocity =
displacement
/
time
(MANDATORY EXPERIMENT) MEASURING CONSTANT ACCELERATION USING AN AIR TRACK
the air track should be
level with weights
attached to the
glider
by a
string
to allow for
constant acceleration
the scalar timer
records
the
time
it
takes
for
the
card
to
pass through
,
therefore
we
must
measure
the
length
of
the
card
also must measure
distance
between
time gates
calculate
velocity first
then use vusat tables
ON A VELOCITY TIME GRAPH
slope =
acceleration
area under graph =
distance travelled
(MANDATORY EXPERIMENT) MEASUREMENT OF "g" BY FREE FALL
set apparatus as shown in diagram
(circuit)
release mechanism
measure displacement
(s)
record time
(t)
PRECAUTIONS
avoid parallax
measure from bottom
of
ball
to
top of trapdoor
use
heavy small ball
to avoid
air resistance
there can be a
delay
on the
timer
when the ball is dropped, so
repeat
exp
3
/
4
times
and use the
shortest
time