Physics

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Earth speeds along at 29.8 km/s in its orbit. Neptune's nearly circular orbit has a radius of 4.5 x 109 km, and the planet takes 164.8 years to make one trip around the Sun. Calculate the speed at which Neptune plods along in its orbit.

  • Physics -

    speed=distance/time=2PI*radius/164.8 years

    now, convert years to seconds and you have it.

  • Physics -

    yes i solve it like this but we will not need the speed of the earth ?

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