如图是小球做平抛运动的闪光照片,图中每个小方格的边长都是0.54cm,已知闪光频率是30Hz,那么重力加速度g是 m/s2,小球的初速度是 m/s,小球通过A点时的速率 m/s
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![如图是小球做平抛运动的闪光照片,图中每个小方格的边长都是0.54cm,已知闪光频率是30Hz,那么重力加速度g是 m/s2,小球的初速度是 m/s,小球通过A点时的速率 m/s](/uploads/image/z/11251748-20-8.jpg?t=%E5%A6%82%E5%9B%BE%E6%98%AF%E5%B0%8F%E7%90%83%E5%81%9A%E5%B9%B3%E6%8A%9B%E8%BF%90%E5%8A%A8%E7%9A%84%E9%97%AA%E5%85%89%E7%85%A7%E7%89%87%2C%E5%9B%BE%E4%B8%AD%E6%AF%8F%E4%B8%AA%E5%B0%8F%E6%96%B9%E6%A0%BC%E7%9A%84%E8%BE%B9%E9%95%BF%E9%83%BD%E6%98%AF0.54cm%2C%E5%B7%B2%E7%9F%A5%E9%97%AA%E5%85%89%E9%A2%91%E7%8E%87%E6%98%AF30Hz%2C%E9%82%A3%E4%B9%88%E9%87%8D%E5%8A%9B%E5%8A%A0%E9%80%9F%E5%BA%A6g%E6%98%AF+++++++++++++++++m%2Fs2%2C%E5%B0%8F%E7%90%83%E7%9A%84%E5%88%9D%E9%80%9F%E5%BA%A6%E6%98%AF+++++++++++m%2Fs%2C%E5%B0%8F%E7%90%83%E9%80%9A%E8%BF%87A%E7%82%B9%E6%97%B6%E7%9A%84%E9%80%9F%E7%8E%87+++++++++m%2Fs)
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