Problem Set - Distance-Time Graphs
Examine this graph carefully to answer questions 1 and 2.
800
E
600
d(m)
D
400
B
C
200 A
0
10
20
30
40
50
t (s)
1. What is the truck’s displacement from its starting point after:
300
(a)
10 s
(b)
2
(c)
30 s
(d)
Soon
(e)
50 s
15 s
43 s
m
oom
300
66
m
On
2. What is the truck’s velocity in each of the intervals A through E?
30 mls
A
B
0m/s
10ms
C
D
40mA
E
20Mt
-
3. Describe briefly the kind of motion that is taking place in each of the situations represented by the
following displacement vs. time graphs.
d(m)
d(m)
0
a
0
t (s)
person
Starts
was
d(m)
running
,
then
0
t (s)
a
at
car
constant
moving
Speed then suddenly stopping
walking
a
a
speed
cyclist
t (s)
adds
then
speed , stops
,
pedals @ constant
foster at constant
then
continues
constant
@
speed
4. Describe briefly the motions represented by each of these graphs. If the speed is changing, state whether
it is increasing or decreasing.
d(m)
d(m)
0
0
t (s)
an
object
Speed
Y
d(m)
increasing
an
but
0
t (s)
object moving
slowing
page 1
forward
down
.
object
beginning
them finally
t (s)
Speeding up
then
swing
stopping
in
the
down
,
.
5. Describe the motion represented by each of the following displacement vs. time graphs.
starts
Your dais mate
at
end
one
of the
Speeds up , slows
of the field
and
@
rest
football field
at the end
down
,
.
,
d(m)
d(m)
d(m)
opposite
the
end
slows
0
you
walk to school @
school
constant
0
t (s)
walk
then
speed
Constant speed,
back
home
stop
You
@
to
end
the
All
the
C
,
,
back to
done
running
Constant
Use the following graph for question 6.
wing
and
,
A wing to the end ( E wind,
end
the
to
( wing
,
CG 's
from
run
back
run
to
.
0
t (s)
@
speed
C
was
wing
0
.
2 4 6 8 10 12 14 16 18 20 22
t (s)
6. a) From the graph above, calculate the average speed for the entire 22 s.
o=tIed¥Ie
.
@
35
30
25
20
15
10
5
d(m)
Tess
king
.
b) Find the average speed for each of the following time intervals:
(i)
0 s to 2 s
de 512
134J
2.sn/s
=
:
.
.
s=q÷ .to#
(ii)
4 s to 8 s
(iii)
14 s to 18 s
w=%=20mft
(iv)
6 s to 17 s
on
% -155¥
.
page 2
,
-
0.91
back @
1.754
m/s
>
HmD
|o.9m/J
direction
line
.
down
where
t (s)
speeds up
the
in
after touching
Your classmate
before
he
finishing
started
.