论文部分内容阅读
题目.将一只皮球竖直向上抛出,皮球运动时受到空气阻力的大小与速度的大小成正比.下列描绘皮球在上升过程中加速度大小a与时间t关系的图像,可能正确的是本题是2012年江苏卷的第4题,为一道单项选择题,考查存在非恒定阻力情形下的竖直上抛运动的at图像,不属于不计空气阻力的理想竖直上抛运动,也不属于受大
Topic will be thrown up a ball straight up, the size of the ball by the air resistance is proportional to the size of the speed The following depicts the acceleration of the ball in the process of increasing the size of a and t, the image may be correct This question is Question 4 of the 2012 Jiangsu Volume is a single-choice question that examines an a-t image of a vertical throwing motion in the presence of a non-constant resistance and does not belong to an ideal vertical throwing motion that does not include air resistance nor does it belong to By big