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Q: Approximate escape velocity on the surface of the Earth.
  • A. 13.8km / s
  • B. 11.2 km / s
  • C. 21.3 km / s
  • D. 4.3 km / s
Correct Answer: Option B - The minimum velocity with which a body must be projected in vertically upward direction again gravitational pull and the body never come back to earth and go away in to the space, is called escape velocity. Escape velocity of Earth (Vₑ ) = 11.2 km/s
B. The minimum velocity with which a body must be projected in vertically upward direction again gravitational pull and the body never come back to earth and go away in to the space, is called escape velocity. Escape velocity of Earth (Vₑ ) = 11.2 km/s

Explanations:

The minimum velocity with which a body must be projected in vertically upward direction again gravitational pull and the body never come back to earth and go away in to the space, is called escape velocity. Escape velocity of Earth (Vₑ ) = 11.2 km/s