TIM
2002-07-16, 07:09 AM
最初由 jui6211 發表
but i still can't solve the problem about "國家發射洲際導彈..其推進力大於重力的時候..軌跡成橢圓形..何解??..何證?..橢圓焦點其中一個是重力場中心..如何求另一個呢??"
Your proof is very exciting ,:)
and i dont understand about 曲率半徑, what can it do for?
贊助商連結
but i still can't solve the problem about "國家發射洲際導彈..其推進力大於重力的時候..軌跡成橢圓形..何解??..何證?..橢圓焦點其中一個是重力場中心..如何求另一個呢??"
Your proof is very exciting ,:)
and i dont understand about 曲率半徑, what can it do for?
贊助商連結