点在铅垂平面Oxy内的运动方程式中t为时间,v0,g为常数,点的运动轨迹应为:(A)直线(B)圆(C)抛物线(D)直线与圆连接

作者: rantiku 人气: - 评论: 0
问题 点在铅垂平面Oxy内的运动方程式中t为时间,v0,g为常数,点的运动轨迹应为: (A)直线 (B)圆 (C)抛物线 (D)直线与圆连接
选项
答案 C
解析 由题意知,,为抛物线

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