# Mars is twice as far from the sun as is Venus. A Martian year is about three times as long as a Venusian year. Which of these two planets has the greater rotational speed in its orbit? Which planet has the greater linear speed?

##### 1 Answer

Dec 24, 2015

The orbital velocity of Venus 35 kilometer/second

Orbital..............................Earth 29.8 kilometer/second

Orbital..............................Mars 24.1 kilometer/second.

#### Explanation:

Venus taKES 243 DAYS FOR ONE ROTATION

EARTH TAHES 23.HOURS 54 MINUTES FOR ONE ROTATION

MARS TAKES 24.623 HOURS FOR ONE ROTATION

Kepler's 3rd Law: P2 = a. Kepler's 3rd law is a mathematical formula. It means that if you know the period of a planet's orbit (P = how long it takes the planet to go around the Sun), then you can determine that planet's distance from the Sun (a = the semimajor axis of the planet's orbit).

as we go outwards speed reduces for planets. Venus have highest among the three...