【物理实验】好看的物理演示实验：力学部分之一 _实验

<br /> 文章图片 <br /> <br /> 牛顿据此提出了一个“大炮”的设想，他画的“大炮”草图——在地球的一座高山上架起一只水平大炮，以不同的速度将炮弹平射出去，射出速度越大，炮弹落地点就离山脚越远。如果速度足够大，物体将绕地球做周期运动，而不再落到地面。</p> <div class="dede_pages"><ul><li><a href='#'>上一页</a></li><li class="thisclass"><a href='#'>1</a></li><li><a href='1206301V42021_2.html'>2</a></li><li><a href='1206301V42021_3.html'>3</a></li><li><a href='1206301V42021_2.html'>下一页</a></li></ul></div> <div class=entry-copyright> <p>特别声明：</span>本站内容均来自网友提供或互联网，仅供参考，请勿用于商业和其他非法用途。如果侵犯了您的权益请与我们联系，我们将在24小时内删除。</p> </div> </div> <div class="entry-footer"> <div class="prev-next sb br mb clearfix"> <p class="post-prev fl ellipsis">上一篇：<a href='/c/1206301V32021.html'>AOC 推出新款 43 英寸电竞显示器：4K 144Hz VA 屏，HDR1000 认证</a> </p> <p class="post-next fr ellipsis">下一篇：<a href='/c/1206301V52021.html'>商务印书馆发布 2021 年度十大网络用语：“觉醒年代”登榜首</a> </p> </div> </div> </div> </article> </main> <aside class="sidebar"> <div class="widget widget_post_thumb"> <h3 class="widget-title"><span>更多...</span></h3> <ul> <li class="item"> <div 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