physics

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Suppose you are on a spaceship of speed 0.8c and you flew horizontally above a circular stadium of radius 1km.what would be your calculated area of that stadium?

  • physics -

    At rest: circle
    A=πR²
    Motion with v=0.8c
    r=Rsqrt(1-β²)
    =R(1-0.8²) =0.6R
    Area of the ellipse
    A₁=πRr=π0.6R² =0.6A

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