AB段的路程S
AB=36.5cm-6.5cm=30cm;小球从A到B的时间t
AB=5h52min5s-5h51min55s=10s;小球从A到B的平均速度V
AB=
=
=3cm/s;
BC段的路程S
BC=66.5cm-36.5cm=30cm;小球从B到C的时间t
BC=5h52min20s-5h52min5s=15s;小球从B到C的平均速度V
BC=
=
=2cm/s;
AC段的路程S
AB=66.5cm-6.5cm=60cm;小球从A到C得时间t
AC=5h52min20s-5h51min55s=25s;小球从A到C的平均速度V
AC=
=
=2.4cm/s;
故答案为:3cm/s;2cm/s;2.4cm/s.