Neptune's speed is:
The acceleration due to gravity is 11.15 metres per second^2.
5.43 km per second.
30 metres per second
It varies.
Depends on the diameter of the pipe and the speed at which the water travels through it.
300 per second
neptune is the furthest actual planet from the sun, approx 3 miles per second. although, pluto (now a dwarf planet) is approx 2.5 miles per second.
The sun doesn't move.
300 megabytes per second is much faster.
They are all changing position all the time. The slowest is Neptune, which is travelling at 5.4 kilometres per second.
Ten dollars per second !!
It is about 186,000 miles per second