24.(12分)(1)滑块在传送带上运动的加速度a=ug=1m/s2(1分)滑块从静止开始运动到与传送带相对静止所用的时间t==2s,这段时间内滑块的位移x0=an2=2m x1=4m(1分)P滑到传送带左端时的速度v=-2m1=2Em/s,运动时间4=-=12(1分)两滑块落地的时间差M=t2+1-14=7.8s(1分)

Dear PeterI am delighted to have received your email. Knowing that you want to learn about Chineseproverbs and their leaning methods, I am writing to tell you somethng about them.As part of the traditonal Chinese culture, Chinese proverbs are summaries of people's wisdomand experience. They are some brief and meaningful sentences created by people and are passed onorally generation by generation. As for the practical ways to lean Chimese proverbs, I suggest thatyou find some relevant materals online, which may give you specific explanations. Additonally, itis beneficial to recite the proverbs every day, and you can apply them to communicating withChinese people around you.I sincerely hope the above can be of some helpoursLi Hua

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