1匀速直线运动解题思路:根据题述的物理情景运用匀速直线运动的公式s=vt解答.例1图1所示为高速摄影机拍摄到的子弹穿过苹果瞬间的照片.该照片经过放大后分析出,在曝光时间内,子弹影像前后错开的距离约为子弹长度的1%~2%.已知子弹飞行速度约为500m·s-1,因此可估算出这幅照片的曝光时间最接近(). 1 uniform linear motion problem solving ideas: According to the subject of the subject using the uniform linear motion equation s = vt solution. Example 1 Figure 1 shows the instant bullets taken by the high-speed camera through the photo of the apple. The photo is enlarged It is analyzed that the distance staggered before and after the bullet image is about 1% to 2% of the bullet length during the exposure time. The known bullet flight speed is about 500m·s-1, so the exposure time of this photo can be estimated to be the closest ().