A rocket needs the speed of _______ to escape from earth's gravity?

  • A. 22 miles per second
  • B. 15 miles per second
  • C. 12 miles per second
  • D. 7 miles per second

Explanation

Earth's escape velocity is about 11.2 km/s, or approximately 7 miles per second. A rocket must reach this ideal speed, ignoring atmospheric drag and other losses, to escape Earth's gravity.

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