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| es·cape ve·loc·i·ty (plural es·cape ve·loc·i·ties) |
noun |
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| Definition: |
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minimum speed to escape gravity: the minimum speed at which an object must travel to escape a planet's or moon's gravitational field in order to orbit around it or move off into space. At or near the Earth's surface, the escape velocity is about 40,000 kph (25,000 mph.)
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