题干

在探究“加速度与力和质量的关系”实验时,某老师对传统实验进行了改进,其实验操作如下:


①如图1所示,先将沙和沙桶通过滑轮悬挂于小车一端,调节平板的倾角θ,使小车沿斜面向下做匀速直线运动,测出沙和沙桶的总质量m;

②保持平板倾角θ不变,去掉沙和沙桶,小车即在平板上沿斜面向下做匀加速直线运动,通过纸带测量其加速度a;

③保持小车质量M不变,多次改变沙和沙桶的总质量m,每次重复①②两步操作,得到小车加速度与合力的关系;

④多次改变小车的质量,进行适当的操作,得到小车加速度和质量的关系.

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    Last Friday, Linda and her husband heard loud noises at their windows. Although the fear of gunshots appeared her thoughts, Linda tried to look into. When I managed to sneak in a look, I saw a mixture of eggs, oranges, and such coming at our windows.”

    Bravely, Linda decided to face her “enemies”. She always believed that “all strangers are my relatives”, she went outside to see “three cute kids”. Rather than shout at them, Linda tried to connect, “Hey guys, thank you for the oranges. Can I have them so they don't go to waste?” But the kids started to run. Linda walked after them and said, “Wait! Wait! Don't be afraid! I am not going to do anything. I just want to talk. And I can use your oranges.” The kids ran off without looking back.

    Linda felt a “sense of motherly connection” after thinking for a while, and she explained “More than forgiveness, it was more like a simple care.”

When Linda ran outside to meet the “dangerous enemy”, it turned out to be a group of 10 and 11 year old children. It helps to see all our enemies as children because they once were children (which is why they often act childishly).It is much easier to see children as basically good or acting out in ways that they “know not what they are doing”.

    People don't willingly choose to be cruel, mean, or hateful. They experience things in their lives--often when they are very young--which make them take on the defenses of anger, and scorn Seeing my enemies as child makes me think of the saying, “all attacks are a cry for help”.

    Forgiveness can lead to understanding. Understanding plants the seeds for love. We can raise a whole generation of children who have the ability to stand for what all the great wise men have taught us: Love the enemy.