WBCS.LIVE practice question

What is the approximate escape velocity on the surface of the Earth?

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. 11.2 km/s
  2. 9.8 km/s
  3. 7.9 km/s
  4. 15.6 km/s

Correct answer and explanation

Correct answer: 11.2 km/s

Explanation: āœ… Correct Answer: A) 11.2 km/s šŸ“š Explanation: Escape velocity is the absolute minimum speed required for a free, non-propelled object to completely escape from the gravitational influence of a massive body. For the Earth, this critical velocity is approximately 11.2 kilometers per second. If a spacecraft travels slower than this speed without continuous propulsion, it will inevitably fall back to the surface.