河北省思博教育2023-2024学年九年级第一学期第三次学情评估（%）数学.考卷答案试卷答案,我们目前收集并整理关于河北省思博教育2023-2024学年九年级第一学期第三次学情评估（%）数学.考卷答案得系列试题及其答案，更多试题答案请关注微信公众号：考不凡/直接访问www.kaobufan.com(考不凡)
河北省思博教育2023-2024学年九年级第一学期第三次学情评估（%）数学.考卷答案试卷答案
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内容包括：学生认为最好的度假方式OnedayIwenttoapark1.度假方式的描述；(人数百分比】Sincetherewereno2.只允许修改10处，多者（从第11处起）不计分2.简单评论；ggestedweplayedbplayOneday,tohaveourhousefix,myfatherintendedtocarryingatreehome3.你的观，点
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M=2kg18.(13分)如图所示,质量M=2kg的滑块A静置在光滑的水平面上,A的左边为四分之一光二滑圆弧轨道,圆弧轨道半径R=0.8m,A的右边为上表面粗糙的水平轨道,A的左侧紧靠固R=0.8m,A定挡板,距离A的右侧s=1m处有与A的水平轨道等高的平台,平台上距离平台边缘sS2s1=1m=2.5m=2.5m处有一弹性卡口。一质量m=1kg的滑块B(视为质点,图中未画出)从圆弧道m=1kg的最高点的正上方h=1m处由静止释放,恰好从圆弧轨道最高点沿切线滑入轨道,且滑上h=1m1=0.075,平台时恰好和A的速度相同。已知滑块B与平台间的动摩擦因数μ=0.075,取重力加速度大小g=10m/s^2。,求:55N(1)滑块B刚运动到圆弧轨道底端时受到轨道的支持力大小;(2)滑块B与滑块A中水平轨道间的动摩擦因数;0.4(3)若滑块B与弹性卡口碰撞前的速度小于1m/s时将原速率弹回,大于或等于1m/s时将通过卡口,判断滑块B能否通过卡口,若能,求滑块B通过卡口时的速度大小;若不能,当滑块B停止运动时给滑块B一水平向右的拉力F,使滑块B能通过卡口,求水平拉力F的取值范围。F>3.75N弹性卡口R
