[color=#000000]根[/color][color=#000000]据[/color][color=#000000]瞬时[/color][color=#000000]加[/color][color=#000000]速[/color][color=#000000]度[/color][color=#000000]矢[/color][color=#000000]量[/color][tex=0.571x0.786]c59+3vo0/Vn/FvNRhDRu5g==[/tex][color=#000000] [/color][color=#000000]的[/color][color=#000000]定义 [/color][color=#000000]，[/color][color=#000000]及[/color][color=#000000]其用[/color][color=#000000]直[/color][color=#000000]角[/color][color=#000000]坐标[/color][color=#000000]和[/color][color=#000000]自[/color][color=#000000]然[/color][color=#000000]坐[/color][color=#000000]标[/color][color=#000000]的[/color][color=#000000]表[/color][color=#000000]示形式 [/color][color=#000000]， [/color][color=#000000]它的大小[/color][color=#000000][/color][tex=2.071x1.286]0RHCG/t7vbeJiT498f7yjg==[/tex][color=#000000][/color][color=#000000]可表示为(           )[/color] 未知类型：{'options': ['[tex=2.0x2.786]+Q+t7SEH/fLzAQfbVQQcyWBLIDlgjDdNoMOVT8qicP7q8yIHZEnbJloI/oNxjqMvGBOJV+/b9GcYozYN4Cns7g==[/tex]', '[tex=1.286x2.429]eHmJ6WkcVxLNZ4Gfz3qUfpFUGWSV61ELrhuM58FD8hFQ0YSmOngeBvhUfqffjOmX[/tex]', '[tex=2.429x2.857]+Q+t7SEH/fLzAQfbVQQcyXp7Vyl+tI3lx0estYhSj492Suo1/3pJFAzW8w7Dy2h9P4yFwB0NJRRdgNId26OqWSplgz98CX2UknX5eDkdDLw=[/tex]', '[tex=1.571x2.571]eHmJ6WkcVxLNZ4Gfz3qUfurcBusCWFDxfAaa028Q0o87OYBxfODI/BXC8Dhs/Qws[/tex]', '[tex=1.714x2.571]eHmJ6WkcVxLNZ4Gfz3qUfvaIp/YbO6Cr6dd0Fqnmp9cbAHdBkzAfWmMWTVTyboda[/tex]', '[tex=7.357x2.571]eHmJ6WkcVxLNZ4Gfz3qUfu1kcI/Yavs3EJZ/U6hZYytN2Zdlq7UB/92HOKbdydijKKxH6ZKNA4cJAA9mdSAdz6Uw9adsekU3tXkRusLoAlWkKhHn/ZAPfugEXw0+m66UlFoxjhnjN/AM9c01GdP9+s1oXNradBtKFPplSkRouIw=[/tex]', '[tex=8.929x3.714]GR45QOvUrpGQsshKhQtqUurEjporc9t+hSCxh+Y+WLN0rehQOI90jQY+aIJCOMJVwYbyJh1VQbQO6mhoQ4mfZS8e6Vr7KlAayauYqKQ+xbZiiU8rXjvzUmEUKsJZOouqjHnD6bdCw5+i5MKJuw21MfNuC+aOXsS5nHWM8FaYFe0=[/tex]', '[tex=9.214x3.714]3Y8oC7CymUo8Ke3Vrai3MTz3vZPykPqHTgzJySYyMDJUpkl6n/izgthiAhMgnp48D8anmj3iQmXM5DueWnb3ycrJVNRWMP/KlQtG1n6iMSw/8m5WLPYCyJxAVKeowXmEABTeay2Reqn3YKBh5UW8BEWa4BKK+97FBJZs9TnVcaw=[/tex]'], 'type': 102}