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P4 Explaining motion • IP4.12
Walking graphs
P4 Explaining motion • IP4.12
• You will be shown a series of graphs.
• You have to walk along a line, so that your
motion is the same as the graph shows.
• Each should take about 10 seconds.
• The exact time and distance is not important.
• Think about each one before you start to move.
Walking graphs
P4 Explaining motion • IP4.12
An easy one to start with . . .
dis
tan
ce f
rom
sta
rtin
g p
oin
t (m
)10
time (s) 100
P4 Explaining motion • IP4.12
What’s happening here?
Think carefully before you start.
dis
tan
ce f
rom
sta
rtin
g p
oin
t (m
)10
time (s) 100
P4 Explaining motion • IP4.12
A three-part journey
dis
tan
ce f
rom
sta
rtin
g p
oin
t (m
)10
time (s) 100
P4 Explaining motion • IP4.12
Going down?
Think about what this means before you start.
dis
tan
ce f
rom
sta
rtin
g p
oin
t (m
)10
time (s) 100
P4 Explaining motion • IP4.12
Negative distance!
Again think about this before you start.
dis
tan
ce f
rom
sta
rtin
g p
oin
t (m
)10
time (s) 100
P4 Explaining motion • IP4.12
Everything all at once!
dis
tan
ce f
rom
sta
rtin
g p
oin
t (m
)10
time (s) 100
P4 Explaining motion • IP4.12
Why is this more realistic?
dis
tan
ce f
rom
sta
rtin
g p
oin
t (m
)10
time (s) 100
P4 Explaining motion • IP4.12
Careful! This is a speed–time graph!
spee
d (
m/s
)2
time (s) 100
P4 Explaining motion • IP4.12
An impossible task? Can this be done?
spee
d (
m/s
)
2
time (s) 100
P4 Explaining motion • IP4.12
A more realistic walk!
spee
d (
m/s
)
2
time (s) 100
P4 Explaining motion • IP4.12
A more complicated journey
spee
d (
m/s
)
2
time (s) 100
P4 Explaining motion • IP4.12
A little bit of everything
spee
d (
m/s
)
2
time (s) 100
P4 Explaining motion • IP4.12
Note: this graph shows velocity not speed.
velo
city
(m
/s)
2
time (s) 10–2
0
P4 Explaining motion • IP4.12
And finally . . . where should you end up here?
velo
city
(m
/s)
2
time (s) 10–2
0
