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general physics

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His spacecraft, Vostok I, was a sphere about 2.3 m in diameter, and it reached a maximum altitude above Earth’s surface of 327 km. What was the spacecraft’s speed at this point in its orbit?

  • general physics -

    the gravitational constant G =6.67•10⁻¹¹ N•m²/kg²,
    Earth’s mass is M = 5.97•10²⁴kg,
    Earth’s radius is R = 6.378•10⁶ m.
    r=R+h =6.378•10⁶ +0.327•10⁶ =...

    ma=F
    F =G•m•M/r²
    ma=mv²/r
    G•m•M/r² =mv²/r
    v=sqrt(GM/r)=...

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