____________________
m
/
s
=
36
km
/
uur
1
m
/
s
=
____________________
,
____________________
km
/
uur
2
m
/
s
=
____________________
,
____________________
km
/
uur
____________________
m
/
s
=
18
km
/
uur
12
m
/
s
=
____________________
,
____________________
km
/
uur
____________________
m
/
s
=
64
,
8
km
/
uur
____________________
m
/
s
=
144
km
/
uur
50
m
/
s
=
____________________
km
/
uur
55
,
6
m
/
s
=
____________________
km
/
uur
____________________
m
/
s
=
72
km
/
uu
r
