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04-14-2018, 10:49 PM

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04-14-2018, 11:08 PM

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Originally Posted by බණ්ඩාර නිළමෙ View Post
වැදගත් කරුණු ටිකක්



මේකනම් ටිකක් අවුල්, මොකද රික්තකයක රොකට් එකක් යවන්න බෑ. හැබැයි ගුරුත්ව ක්ශේස්ත්‍රයෙන් පිටට ගියාට පස්සෙ ඒක මුලින් ලබාගත්ත ප්‍රවේගයෙන් යනවා. ඒ නිවුටන්ගෙ පලවෙනි නියමයෙ විදිහට

මම නම් හිතුවෙ මේ විදිය හරි කියලා බන්. රොකට් එක යන්නෙ ඒක ඉන්දන පිටිපස්සට විදින නිසා.. මට හරියටම කියන්න බෑ


https://www.livescience.com/34475-ho...thout-air.html
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04-14-2018, 11:32 PM

Quote:
Originally Posted by guyzon View Post
එතකොට රොකට් එක බ්රේක් ගහන්නේ කොහොමද බං?

Retrorockets walin...

E kiynne overall spacecraft eka yna direction ekata opposite direction ekata drive karana rockets..
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04-14-2018, 11:36 PM

Quote:
Originally Posted by guyzon View Post
එතකොට රොකට් එක බ්රේක් ගහන්නේ කොහොමද බං?
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04-14-2018, 11:50 PM

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04-14-2018, 11:50 PM

Quote:
Originally Posted by බණ්ඩාර නිළමෙ View Post
මේකනම් ටිකක් අවුල්, මොකද රික්තකයක රොකට් එකක් යවන්න බෑ. හැබැයි ගුරුත්ව ක්ශේස්ත්‍රයෙන් පිටට ගියාට පස්සෙ ඒක මුලින් ලබාගත්ත ප්‍රවේගයෙන් යනවා. ඒ නිවුටන්ගෙ පලවෙනි නියමයෙ විදිහට
Wrong. A rocket can accelerate in space.
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04-14-2018, 11:54 PM

Quote:
Originally Posted by Schrodinger Cat View Post
Retrorockets walin...

E kiynne overall spacecraft eka yna direction ekata opposite direction ekata drive karana rockets..
welcome.. onna man nil kalaa
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04-14-2018, 11:54 PM

Dnna widiyata space ekedi rocket ekn eliyata widina exhaust eke force ekata equal force ekk rocket ekata labenawa issarahta ynna (respective to newton's 3rd law)
Engine eka athule combustion ekata fuel wagema oxidizer geniyanawa e qwe oxygen...commonly liquid oxygen.

Last edited by Schrodinger Cat; 04-15-2018 at 12:04 AM.
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smile 04-14-2018, 11:55 PM

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welcome.. onna man nil kalaa
Thanx
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04-15-2018, 12:00 AM

Quote:
Originally Posted by Schrodinger Cat View Post
Retrorockets walin...

E kiynne overall spacecraft eka yna direction ekata opposite direction ekata drive karana rockets..

Plus mokakhari planet ekaka wage gravitational field eka use karala accelerate/decelerate karannath puluwnkama thiyenawa.
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