有两个力作用在同一物体上,其中F1=30N,F2=10N,则它们的合力的大小〈 〉 A.一定大于10N.B.等于10N.C.等于40N.一定大于20N.一物体受两个力F1=4N,F2=10N的作用,则物体受到的合力的大小是〈 〉 A.6N.B.14
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![有两个力作用在同一物体上,其中F1=30N,F2=10N,则它们的合力的大小〈 〉 A.一定大于10N.B.等于10N.C.等于40N.一定大于20N.一物体受两个力F1=4N,F2=10N的作用,则物体受到的合力的大小是〈 〉 A.6N.B.14](/uploads/image/z/8278638-6-8.jpg?t=%E6%9C%89%E4%B8%A4%E4%B8%AA%E5%8A%9B%E4%BD%9C%E7%94%A8%E5%9C%A8%E5%90%8C%E4%B8%80%E7%89%A9%E4%BD%93%E4%B8%8A%2C%E5%85%B6%E4%B8%ADF1%3D30N%2CF2%3D10N%2C%E5%88%99%E5%AE%83%E4%BB%AC%E7%9A%84%E5%90%88%E5%8A%9B%E7%9A%84%E5%A4%A7%E5%B0%8F%E3%80%88+%E3%80%89+A%EF%BC%8E%E4%B8%80%E5%AE%9A%E5%A4%A7%E4%BA%8E10N.B.%E7%AD%89%E4%BA%8E10N.C.%E7%AD%89%E4%BA%8E40N.%E4%B8%80%E5%AE%9A%E5%A4%A7%E4%BA%8E20N.%E4%B8%80%E7%89%A9%E4%BD%93%E5%8F%97%E4%B8%A4%E4%B8%AA%E5%8A%9BF1%3D4N%2CF2%3D10N%E7%9A%84%E4%BD%9C%E7%94%A8%2C%E5%88%99%E7%89%A9%E4%BD%93%E5%8F%97%E5%88%B0%E7%9A%84%E5%90%88%E5%8A%9B%E7%9A%84%E5%A4%A7%E5%B0%8F%E6%98%AF%E3%80%88+%E3%80%89+A%EF%BC%8E6N.B.14)
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