Categories:

範例:地表拋體(重力場)與行星運動

某人在一星球表面上以速率 v 鉛直上拋一物體，經過時間 t 落回原拋射點。若該星球半徑為R，不計阻力，則至少需以多大速率沿星球表面拋射，才能使物體不落回該星球？(A)v t∕R (B) (C) (D) (E)2 v R∕t 。[92南一中]

rev="post-732" No comments

By admin – 2009 年 03 月 17 日

0 Responses

Stay in touch with the conversation, subscribe to the RSS feed for comments on this post.

You must be logged in to post a comment.