2022年高考物理试卷(河北)(解析卷)
2022年河北省普通高中学业水平选择性考试(河北卷)理综物理部分本试卷满分100分,考试时间90分钟。一、单项选择题:本题共7小题,每小题4分,共28分。在每小题给出的四个选项中,只有一项是符合题目要求的。1.科学训练可以提升运动成绩,某短跑运动员科学训练前后百米全程测试中,速度v与时间t的关系图像如图所示。由图像可知( )A.时间内,训练后运动员的平均加速度大B.时间内,训练前、后运动员跑过的距离相等C.时间内,训练后运动员的平均速度小D.时刻后,运动员训练前做减速运动,训练后做加速运动【答案】D【解析】【详解】A.根据图像的斜率表示加速度,由题图可知时间内,训练后运动员的平均加速度比训练...
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