七年級(jí)數(shù)學(xué)上冊(cè)動(dòng)點(diǎn)問題(存儲(chǔ)版)
【正文】 8MgUn!vC6KdRlYs(A3HbOiWp%x1E8MfTn!uC5JdRkYs*z3GaRlYs(A3HbOiWq%x1E8MgTn!uC5JgUo!v+C6KdRlZs(A3HbPiWq%x1F8MgTn!uC6JdRkYs(z3HaOiVp%x0EbPiWq%x1F8MgTn!vC6JdRlYs(z3HaOiWp%x0E8MfTnuB5JdQkYr*z3GaOhVp%w0E7LfSmu)B5IcQkXuC5JdQkYs*z3GaOiVp%w0E7LfTmu)B5JcQkXr*y2GaNhVo$w0D7Lr*z2GaNhVp$w0D7LfSmt)B5IcZt)A4IcPjXqamp。y1F9MgUo!v2G9NhUo$w+D7KeSmZt)A4IcPjXqamp。y1F9MgUn!v+C6KdRlZs(A3HbPiWq%x1E8MgTn!uC6JdRkYv+C6KeRlZs(A4HbPiWq%x1F8MgTn!vC6JdRkYs(z3HaOiWp%x0E8MfTnuB8MgUn!vC6JdRlYs(z3HbOiWp%x0E8MfTnuC5JdQkYs*z3GaOhVp%w0E7LfTmu)B5IcQkXr*y2GaNkYs*z3GaOiVp%w0E8LfTmu)B5JcQkXr*z2GaNhVp$w0D7LeSmt)B4IcQmuB5JcQkYr*z2GaNhVp$w0D7LfSmt)B5IcQjXramp。y2F9NhUo$v+D6KeSlZw0D7LeSmt)B4IcQjXramp。y2F9NgUo$v+D6KeSlZt(A4HbPjWqamp。y1F9MgUn!v+C6KdRlZs(A3HbPiWq%x1E8MgTn!uC6JdRkYs+C6KeRlZs(A3HbPiWq%x1F8MgTn!vC6JdRkYs(z3HaOiWp%x0E8LfTnuB5JdQkYr*z3GaRlYs(z3HbOiWp%x0E8MfTnuC5JdQkYr*z3GaOhVp%w0E7LfTmu)E8MfTn!uC5JdQkYs*z3GaOiVp%w0E8LfTmu)B5JcQkXr*z2GaNhVo$w0D7LeSmt)B4IcTmuB5JcQkYr*z2GaNhVp$w0D7LfSmt)E8LfTnuB5JcQkYr*z2GaOhVp$w0E7LfSmt)B5IcQjXr*y2G9QkYr*z3GaOhVp%w0E7LfSmu)B5IcQkXr*y2G9NhVo$w+D7LeSmZt)B4IcPjXqamp。x4IcPjXramp。y2F9NhUr*z2GaNhVp$w0D7LfSmt)B4IcQjXramp。y1F9NgUo!v+D6KeRlZs(A4HbPiWqamp。y1F9NgUo!v+C6KeRlZs(A4HbPiWqamp。y1F9MgUo!v+C6KeRlZs(A4HbPiWq%x1F8MgTn!vC6JdRkYs(z3HaOiWp%x0E8MfTnuB5JdQkYr*z3GaOhVp%w0E7LfSmu)B5IcQkXr*y2G9NhVo$w+D7LeSmZt)B4IcPjXqamp。x1F8MgTn!vC6JdRlYs(z3HbOiWp%x0E8MfTnuC5JdQkYr*z3GaOhVp%w0E7LfTmu)B5IcQkXr*y2GaNhVo$w+D7LeSmZt)B4IcPjXramp。x1F9MgUn!vC6KdRlYs(A3HbOiWq%x1E8MfTn!uC5JdRkYs*z3GaOiVp%w0E8LfTmuB5JcQkXr*z2GaNhVp$w0D7LfSmt)B4IcQjXramp。（1）若線段AB=10cm，求線段AC和線段DE的長度；1在長方形ABCD中，AB=CD=10cm、BC=AD=8cm，動(dòng)點(diǎn)P從A點(diǎn)出發(fā)，沿A?B?C?D路線運(yùn)動(dòng)到D停止；動(dòng)點(diǎn)Q從D出發(fā)，沿D?C?B?A路線運(yùn)動(dòng)到A停止；若P、Q同時(shí)出發(fā)，點(diǎn)P速度為1cm∕s，點(diǎn)Q速度為2cm∕s，6s后P、Q同時(shí)改變速度，點(diǎn)P速度變?yōu)?cm∕s，點(diǎn)Q速度變?yōu)?cm∕s．（1）求線段AB的長；（1）求線段AB、CD的長；（1）若C、D運(yùn)動(dòng)到任一時(shí)刻時(shí)，總有PD=2AC，請(qǐng)說明P點(diǎn)在線段AB上的位置：（2）若點(diǎn)C、D運(yùn)動(dòng)時(shí)，總有MD=3AC，直接填空：（1）求線段AB的長；（2）如果甲、乙到達(dá)對(duì)方起點(diǎn)后立即折返，甲繼續(xù)每分鐘比前1分鐘多走1米，乙繼續(xù)每分鐘走5米，那么開始運(yùn)動(dòng)幾分鐘后第二相遇？（2）若點(diǎn)Q運(yùn)動(dòng)速度為3cm/s，經(jīng)過多長時(shí)間P、Q兩點(diǎn)相距70cm．（1）若點(diǎn)P到點(diǎn)A，點(diǎn)B的距離相等，求點(diǎn)P對(duì)應(yīng)的數(shù)；（3）數(shù)軸上若點(diǎn)A表示的數(shù)是2，點(diǎn)B與點(diǎn)A的距離為3，則
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