GK
SOLAR SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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To escape Earth’s gravity and establish an orbit around the Earth, a spaceship has to reach
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Exceptional Velocity
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Escape Velocity
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Orbital Velocity
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The speed of sound
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Explanation:
Detailed explanation-1: -A spacecraft leaving the surface of Earth, for example, needs to be going about 11 kilometers (7 miles) per second, or over 40, 000 kilometers per hour (25, 000 miles per hour), to enter orbit. Achieving escape velocity is one of the biggest challenges facing space travel.
Detailed explanation-2: -When astrophysicists design rockets to travel to other planets-or out of the solar system entirely-they use the rotational velocity of the Earth to speed up the rockets and launch them beyond the reach of Earth’s gravity. The speed required to break free of an orbit is known as escape velocity.
Detailed explanation-3: -On earth, the escape velocity is around 40, 270 kmph, which is around 11, 186 m/s.
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