r
5
0
ϕ
1
π
3
ϕ
π
6
s
5
w
7
t
o
t
a
l
t
i
m
e
=
1
7
.
4
8
0
s
w
i
m
t
i
m
e
=
1
0
.
0
0
0
w
a
l
k
t
i
m
e
=
7
.
4
8
0
s
i
n
(
ϕ
1
)
ϕ
1
=
0
.
8
2
6
9
9
3
s
/
w
=
0
.
7
1
4
2
8
6