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Railways PYQCBT 2 2017

RRB NTPC · Question 65

The escape velocity on the Earth's surface is about ______.

  1. 13.8 km/sec

  2. 11.2 km/sec

  3. 21.3 km/sec

  4. 4.3 km/sec

Show answer & explanation

Answer: (B) 11.2 km/sec

Explanation

Escape velocity from Earth's surface, the minimum speed needed to escape its gravity, is about 11.2 km/s.