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Math Help - Linear Speed of Earth

  1. #1
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    Linear Speed of Earth

    The mean distance of Earth from the Sun is 9.29 x 10^7 miles. Assuming that the orbit of Earth around the Sun is circular and that 1 revolution takes 365 days, find the linear speed of Earth. Express your answer in miles per hour.
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  2. #2
    Grand Panjandrum
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    Quote Originally Posted by magentarita View Post
    The mean distance of Earth from the Sun is 9.29 x 10^7 miles. Assuming that the orbit of Earth around the Sun is circular and that 1 revolution takes 365 days, find the linear speed of Earth. Express your answer in miles per hour.
    You have missed out the part that says "with respect to a reference frame at rest with respect to the sun".

    Circumference of orbit C=2 \times \pi \times 9.29 \times 10^7

    Period in hours: \tau=365 \times 24

    Speed in miles per hour =C/\tau

    RonL
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    ok..

    Are you saying that the linear speed of Earth is C/t?
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  4. #4
    Grand Panjandrum
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    Quote Originally Posted by magentarita View Post
    Are you saying that the linear speed of Earth is C/t?
    Yes

    RonL
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  5. #5
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    Thanks

    I got it now. Thanks.
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