Thursday, April 4, 2013

Speed of an object going around the sun



Speed of an object going around the sun

Question:  An object travels in a circle around the sun.  The radius of the circle is 93 million miles.  It takes 365 ¼ days for the object to make one complete revolution around the sun.  What is the average speed in miles per hour for this object?

Answer:  The distance traveled is the circumference of the circle, which is


2 x 3.1416 x 93,000,000


or 584,337,600 miles.

(Note to self.  Remember to multiply by 2.)

The number of hours in 365 ¼ days is 8,766.



The average speed in miles per hour is (585,337,600)/(8766) or 66,661 miles per hour.

Note:  The earth is 93 million miles from the sun but I do not know the exact nature of its orbit.  Does it travel in a circle or ellipse?  I am clueless.   If science students wants to create more questions of this type I will publish guest posts.

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