Multiple choice general knowledge science & technology

How fast must a rocket travel to escape Earth’s gravity?

  1. 7 miles a second

  2. 14miles a second

  3. 20 miles a second

  4. 25 miles a second
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Earth's escape velocity is approximately 7 miles per second (about 11.2 km/s or 25,000 mph). This is the minimum speed a rocket must achieve to break free from Earth's gravitational pull without further propulsion. 14, 20, and 25 miles per second all exceed the actual escape velocity, which is around 7 mps.

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