问2道高中物理题1 一小孩站在水平泥地上,用弹弓竖直向上弹射小石子.弹弓发射小石子的初速度为40m/s,并设想空气对小石子的阻力为零,求(1)发射后经过5秒,小石子的位移大小和方向(2)小
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![问2道高中物理题1 一小孩站在水平泥地上,用弹弓竖直向上弹射小石子.弹弓发射小石子的初速度为40m/s,并设想空气对小石子的阻力为零,求(1)发射后经过5秒,小石子的位移大小和方向(2)小](/uploads/image/z/6691464-0-4.jpg?t=%E9%97%AE2%E9%81%93%E9%AB%98%E4%B8%AD%E7%89%A9%E7%90%86%E9%A2%981+%E4%B8%80%E5%B0%8F%E5%AD%A9%E7%AB%99%E5%9C%A8%E6%B0%B4%E5%B9%B3%E6%B3%A5%E5%9C%B0%E4%B8%8A%2C%E7%94%A8%E5%BC%B9%E5%BC%93%E7%AB%96%E7%9B%B4%E5%90%91%E4%B8%8A%E5%BC%B9%E5%B0%84%E5%B0%8F%E7%9F%B3%E5%AD%90.%E5%BC%B9%E5%BC%93%E5%8F%91%E5%B0%84%E5%B0%8F%E7%9F%B3%E5%AD%90%E7%9A%84%E5%88%9D%E9%80%9F%E5%BA%A6%E4%B8%BA40m%2Fs%2C%E5%B9%B6%E8%AE%BE%E6%83%B3%E7%A9%BA%E6%B0%94%E5%AF%B9%E5%B0%8F%E7%9F%B3%E5%AD%90%E7%9A%84%E9%98%BB%E5%8A%9B%E4%B8%BA%E9%9B%B6%2C%E6%B1%82%EF%BC%881%EF%BC%89%E5%8F%91%E5%B0%84%E5%90%8E%E7%BB%8F%E8%BF%875%E7%A7%92%2C%E5%B0%8F%E7%9F%B3%E5%AD%90%E7%9A%84%E4%BD%8D%E7%A7%BB%E5%A4%A7%E5%B0%8F%E5%92%8C%E6%96%B9%E5%90%91%EF%BC%882%EF%BC%89%E5%B0%8F)
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