帮我做几道物理题,要有具体的步骤,【1】汽车以恒定的速率饶圆形广场一周用时2min,每行驶半周,速度方向改变多少度?汽车每行驶10s,速度方向改变多少度?先做一个圆表示汽车运行的轨迹,然后
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![帮我做几道物理题,要有具体的步骤,【1】汽车以恒定的速率饶圆形广场一周用时2min,每行驶半周,速度方向改变多少度?汽车每行驶10s,速度方向改变多少度?先做一个圆表示汽车运行的轨迹,然后](/uploads/image/z/703798-70-8.jpg?t=%E5%B8%AE%E6%88%91%E5%81%9A%E5%87%A0%E9%81%93%E7%89%A9%E7%90%86%E9%A2%98%2C%E8%A6%81%E6%9C%89%E5%85%B7%E4%BD%93%E7%9A%84%E6%AD%A5%E9%AA%A4%2C%E3%80%901%E3%80%91%E6%B1%BD%E8%BD%A6%E4%BB%A5%E6%81%92%E5%AE%9A%E7%9A%84%E9%80%9F%E7%8E%87%E9%A5%B6%E5%9C%86%E5%BD%A2%E5%B9%BF%E5%9C%BA%E4%B8%80%E5%91%A8%E7%94%A8%E6%97%B62min%2C%E6%AF%8F%E8%A1%8C%E9%A9%B6%E5%8D%8A%E5%91%A8%2C%E9%80%9F%E5%BA%A6%E6%96%B9%E5%90%91%E6%94%B9%E5%8F%98%E5%A4%9A%E5%B0%91%E5%BA%A6%3F%E6%B1%BD%E8%BD%A6%E6%AF%8F%E8%A1%8C%E9%A9%B610s%2C%E9%80%9F%E5%BA%A6%E6%96%B9%E5%90%91%E6%94%B9%E5%8F%98%E5%A4%9A%E5%B0%91%E5%BA%A6%3F%E5%85%88%E5%81%9A%E4%B8%80%E4%B8%AA%E5%9C%86%E8%A1%A8%E7%A4%BA%E6%B1%BD%E8%BD%A6%E8%BF%90%E8%A1%8C%E7%9A%84%E8%BD%A8%E8%BF%B9%2C%E7%84%B6%E5%90%8E)
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