Calculate the escape velocity for a rocket fired from the earth’s surface at a point…

Calculate the escape velocity for a rocket fired from the earth’s surface at a point where the acceleration due to gravity is 10ms-2 and the radius of the earth is 6 x 106m.
  • A.
    7.8 x 106ms-12
  • B.
    1.1 x 104ms-1
  • C.
    3.5 x 107ms-1
  • D.
    6.0 x 107 ms-1
  • E.
    1.2 x 108ms2-1
Correct Answer: Option B
Explanation

Hint: V = √2gr = √(2x10x6x106) + 1.1 x 104ms-1

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