如图10.一枚运载火箭从地面处发射.当火箭到达点时.从地面处的雷达站测得的距离是.仰角是．后.火箭到达点.此时测得的距离是.仰角为.解答下列问题: (1)火箭到达点时距离发射点有多远 (2)火箭从——青夏教育精英家教网—

如图10.一枚运载火箭从地面处发射.当火箭到达点时.从地面处的雷达站测得的距离是.仰角是．后.火箭到达点.此时测得的距离是.仰角为.解答下列问题: (1)火箭到达点时距离发射点有多远 (2)火箭从点到点的平均速度是多少 (1)在中.····················· 1分 (km)······················ 3分火箭到达点时距发射点约············································································· 4分 (2)在中.············································································ 1分 ························································································ 3分 ······················································ 5分答:火箭从点到点的平均速度约为【查看更多】

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如图10，一艘轮船从离A观察站的正北海里处的B港出发向东航行，观察站第一次测得该船在A地北偏东30°的C处；半小时后，又测得该船在A地的北偏东60°的D处，求此船的速度.