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Calculate the escape velocity of a satellite launched from the earth’s surface (Take g as...

Physics
WAEC 1993
Calculate the escape velocity of a satellite launched from the earth’s surface (Take g as 10ms-2 and the radius of the earth as 6.4 x 106m)
  • A. 8.00 x 106ms-1
  • B. 1.13 x104ms-1
  • C. 3.58x102ms-1
  • D. 5.59 x10-2ms-1
  • E. 3.95x10-2ms-1
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Correct Answer: Option B
Explanation
V = √2gr

= √2 x 10 x 6.4 x 106

1.13 x 104ms-1
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