The distance between the Sun and the Earth is 1 AU (150 million km). Calculate the distance traveled by the Earth in one year. b. It takes 365 days for the Earth to complete one revolution around the Sun. Calculate the speed (in km/s) with which it is going around the Sun. (Hints: speed = distance/time, convert one year to seconds and 1AU to meters.)

a.

b.29.9 Km/s

Explanation:

We are given that

The distance between the Sun and the Earth=1 AU=150 million=m

1 million km=

Time=365 days

a.Radius=r=

The distance traveled by Earth in in 1 year=

By using

The distance traveled by Earth in in 1 year=

b.The distance traveled by Earth in in 1 year (365 days)=1 revolution=

1 km=1000 m

Time =365 days=

1 day=24 hours

1 hour=60 minutes

1 minute=60 seconds

Speed=

Using the formula

Speed of  Earth=

Hence, the speed of Earth=29.9 km/s

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