Earth takes a year to orbit the sun at a distance of 1.5x10^11m. Calculate its speed.

Question

amistre64 · Answer

1 cycle per year ;)

amistre64 · Answer

... 1 rpy?

anonymous · Answer

First calculate the circumference:
D=2πr=2*(3.14)*1.5*10^11=9.42*10^11

anonymous · Answer

nah ..i want the speed ??
in km/s or m/s

anonymous · Answer

Then divide D with time (1 year) and find the speed.

anonymous · Answer

One year in seconds is 3.15*10^7 so the speed in m/s is:
9.42*10^11/3.15*10^7=0.30*10^5 m/s!

anonymous · Answer

thanku !!
the answer is correct !! but still i didn't understand :'(

anonymous · Answer

The speed is given by dividing the distance with time. The distance the Earth travels is the circumference around the sun. Then you convert the year in seconds and you do the math!

anonymous · Answer

thanku !!
the answer is correct !! but still i didn't understand :'(

anonymous · Answer

how did u take 1.5x10^11m as radius ??