Multiple choice general knowledge science & technology

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

  1. 14miles a second

  2. 7 miles a second

  3. 20 miles a second

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

Earth's escape velocity is approximately 11.2 km/s, which converts to about 7 miles per second. This is the minimum speed needed for an object to break free from Earth's gravitational pull without additional propulsion. Higher speeds would also escape but 7 miles/s is the threshold.

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