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匀变速直线运动

> 左下图是某监测系统每隔拍摄的，关于火箭发射起始阶段做匀加速运动的一组照片．已知火箭的长度为，用刻度尺测量照片上的长度关系结果如图所示．则可求出火箭的加速度大小a = m／s 2，火箭在照片中第2个像所对应时刻的瞬时速度大小u = m/s．

问题：

发布时间：2024-09-11

左下图是某监测系统每隔拍摄的，关于火箭发射起始阶段做匀加速运动的一组照片．已知火箭的长度为，用刻度尺测量照片上的长度关系结果如图所示．则可求出火箭的加速度大小a = m／s ²，火箭在照片中第2个像所对应时刻的瞬时速度大小u = m/s．

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