一个质量为1kg的物体,以速度v0=5m/s向东运动,物体同时受到两个恒力的作用,F1=2N,方向向南,F2=0.5N,方向向西,求2秒末物体动量的大小和方向.(答案是4倍根号下2)
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![一个质量为1kg的物体,以速度v0=5m/s向东运动,物体同时受到两个恒力的作用,F1=2N,方向向南,F2=0.5N,方向向西,求2秒末物体动量的大小和方向.(答案是4倍根号下2)](/uploads/image/z/3933832-40-2.jpg?t=%E4%B8%80%E4%B8%AA%E8%B4%A8%E9%87%8F%E4%B8%BA1kg%E7%9A%84%E7%89%A9%E4%BD%93%2C%E4%BB%A5%E9%80%9F%E5%BA%A6v0%3D5m%2Fs%E5%90%91%E4%B8%9C%E8%BF%90%E5%8A%A8%2C%E7%89%A9%E4%BD%93%E5%90%8C%E6%97%B6%E5%8F%97%E5%88%B0%E4%B8%A4%E4%B8%AA%E6%81%92%E5%8A%9B%E7%9A%84%E4%BD%9C%E7%94%A8%2CF1%3D2N%2C%E6%96%B9%E5%90%91%E5%90%91%E5%8D%97%2CF2%3D0.5N%2C%E6%96%B9%E5%90%91%E5%90%91%E8%A5%BF%2C%E6%B1%822%E7%A7%92%E6%9C%AB%E7%89%A9%E4%BD%93%E5%8A%A8%E9%87%8F%E7%9A%84%E5%A4%A7%E5%B0%8F%E5%92%8C%E6%96%B9%E5%90%91%EF%BC%8E%EF%BC%88%E7%AD%94%E6%A1%88%E6%98%AF4%E5%80%8D%E6%A0%B9%E5%8F%B7%E4%B8%8B2%EF%BC%89)
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