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- Newton: viteza de evadare din câmpul gravitational al unui corp ceresc este:
vesc = (2GM/R)1/2
Unde G este constanta universala a gravitatiei a carei valoare este de 6,673 x 10-11 m3 kg-1 s-2;
M este masa corpului de pe care dorim sa evadam;
R este raza acestuia. Știință și tehnică - by Ilinca Florea
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- Având în vedere că ipoteza existenței găurilor negre se bazează pe presupunerea că ar exista corpuri la suprafața cărora viteza de evadare să fie mai mare decât viteza luminii, - Astronomy
by Ilinca Florea - Related KudoZ question
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- Úniková rýchlosť, tiež 2. kozmická rýchlosť je najnižšia rýchlosť, ktorou sa teleso zanedbateľne malej hmotnosti v danej výške pohybuje po parabolickej dráhe okolo centrálneho telesa. Wikipedia - by Michal Zugec
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- Úniková rýchlosť, alebo ináč 2. kozmická rýchlosť, je pritom
najmenšia možná rýchlosť potrebná na prekonanie gravitačného pôsobenia planéty. Čím väčšie je gravitačné zrýchlenie na povrchu planéty tým vyššia je úniková rýchlosť. - 1sg
by Michal Zugec - Ak by ste ale loptičku vyhodili vodorovne rýchlosťou 11,2 km.s-1, čo je známa úniková rýchlosť (druhá kozmická rýchlosť) z gravitačného poľa Zeme, loptička by sa v tomto prípade vymanila z pôsobenia gravitačného poľa Zeme a mohla by uniknúť do vesmíru. - Uniza
by Michal Zugec - Related KudoZ question
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- The speed necessary for an object to escape the gravitational pull of an object. Anything that moves away from the object with more than the escape speed will never return. physics.fortlewis.edu
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- When an object is traveling exactly at escape speed, it is in a parabolic orbit with the body at the focus of the parabola. A parabolic path is open; hence an object following such a path will never return to the body. - Conservapedia
![](/images/wikiwords/small_grey_arr.gif) - Black holes, having infinite density, have an infinitely large escape speed. But it turns out that the escape speed value depends on how far an object is from a body of mass. So there is a certain distance from a black hole where the escape speed just equals the speed of light. - Are black holes real?
![](/images/wikiwords/small_grey_arr.gif) - One somewhat counterintuitive feature of escape velocity is that it is independent of direction, so that "velocity" is a misnomer; it is a scalar quantity and would more accurately be called "escape speed". - Space Wiki
![](/images/wikiwords/small_grey_arr.gif) Compare [close] - Portuguese
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- Em física, a velocidade de escape é a velocidade na qual a energia cinética de um corpo é igual em magnitude à sua energia potencial em um campo gravitacional.
Ela é normalmente descrita como a velocidade necessária para "libertar-se" de um campo gravitacional; entretanto, isto não vale para objetos que tem propulsão própria. Wikipedia - by José Raeiro
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