匀速圆周运动是常见运动模型中的一种.利用此运动可测出一些运动物体的速度.1测子弹的速度1.1旋转圆筒法让子弹穿过匀速旋转的圆筒,由于子弹的速度很大,可看成是匀速直线运动,在匀速旋转的圆筒上留下子弹穿过的孔,通过匀速圆周运动的知识求出子弹穿过圆筒的时 A constant circular motion is one of the common motion models that can be used to measure the speed of some moving objects.1 Measuring the Speed ​​of a Bullet 1.1 Rotating a Cylinder Method Let a bullet pass through a cylinder that rotates at a constant speed, , Can be seen as a uniform linear motion, leaving the bullet through the hole in a uniform rotation of the cylinder, through the knowledge of uniform circular motion to find the bullet through the cylinder