Acceleration
Worksheet.
Name:
Date:
-
14.2
Acceleration
Acceleration
is
the
rate
of
change
in
the
speed
of
an
object. To
determine
the
rate
of
acceleration,
you
use
the
formula
below.
The
units
for acceleration
are
meters
per
second
per
second
or
rn/s
2
.
Acceleration
=
Final
speed—Beginning
speed
Time
V
2
—V
1
t
A
positive
value
for
acceleration
shows
speeding
up,
and
negative value
for
acceleration
shows
slowing
down.
Slowing
down
is
also
called
deceleration.
The
acceleration
formula
can
be
rearranged to
solve
for other variables such
as
final
speed
(v2)
and
time
(t).
=
v1
+(axt)
V1
—
V
t=.
a
EXAMPLES
1.
A
skater
increases
her
velocity
from
2.0
rn/s
to
10.0
ni/s
in
3.0
seconds.
What
is
the
skater’s
acceleration?
Looking
for
Solution
Acceleration
of
the skater
Given
Acceleration
=
10.0
rn/s
—
2.0
rn/s
=
2.7
rn/s
2
Beginning
speed
=
2.0 rn/s
3
s
Final
speed
10.0
rn/s
Change
in
time
=
3
seconds
The
acceleration
of
the
skater
is
2.7
meters
per second
Relationship
per
second.
V
2
—V
1
t
2.
A
car
accelerates
at
a
rate
of
3.0
rn/s
2
.
If
its
original
speed
is
8.0
m/s,
how
many
seconds will
it
take
the
car
Lgjor
__
Solun
__-
The
time
to
reach the
final
speed.
Time
=
25.0
rn/s
—
8.0
m/s
=
s
Given
3.0
rn/s
2
Beginning
speed
=
8.0
m/s;
Final
speed
=
25.0
rn/s
Acceleration
=
3.0
mIs
2
The
time
for
the
car
to
reach
its
final speed
is
5.7
seconds.
Relationship
V
2
—V
1
a
