40 seconds/15 revolutions = 22/3 second per revolution
Generally decreased.
I believe you find that an object is in motion if the distance between it and a reference point is changing. A reference point is another object that is not moving that you would use to calculate if an object is moving.
Around the equator the Sun rotates once every 24.47 days. However this number changes with latitude, because the Sun experiences what astronomers call differential rotation. This is because the Sun is not solid like the Earth but gaseous. At the poles the rotation period is longer, about 33.5 days.
That's the object's 'speed'.
period of time?
The Moon has a rotation of approximately 27 1/3 days.
Period of rotation is the time taken for an object to complete exactly one revolution around another object, like the earth rotating around the sun or the moon rotating around the earth.
period rotation: 1 rotation of the earth(1 day) period revolution: 1 year around the sun
All planets in our solar system vary in the time it takes them to complete a revolution. This is due to their differing distances from the sun. As far as rotation goes, the time varies from nine hours and fifty minutes for Jupiter to 244 days for Venus to make a like rotation.
A day is the period it takes an object to rotate once on it's axis.
We call the Earth's daily motion "rotation", and its period ... about 24 hours ... a "day". We call the Earth's annual motion "revolution", and its period ... about 365 days ... a "year".
Period of rotation is the time taken for an object to complete exactly one revolution around another object, like the earth rotating around the sun or the moon rotating around the earth.
anu way the answer is PERIOD OF ROTATION! hope i helped.
The period of rotation for Venus is 243 days
The sun has two types of period of rotation, the sidereal rotation period and the synodic rotation period. The sidereal rotation period is 24.47 days. The synodic rotation period is 26.24 days.
The rotation period of Venus is 243.0187 Earth days
Pluto has the longest REVOLUTION period Venus has the longest ROTATION period