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        1. Ӣҽ̾W(wng) > > }ĿԔ

          }ĿӰг@ӵĈ܇Ա^ٶȏđwɽʮ@U(xin)Ĕzrоԓ}шģ܇ɿ|(zh)c(din)Կ՚Գٶv0=15m/sđ߅Oc(din)ˮƽڿw1sǡÏAc(din)^ڿ^һΕrg䵽ɽABٶ=53cos53=0.6sin53=0.8

          1Ac(din)x߅Oc(din)ˮƽx͸߶Ȳ

          2܇ڿwеĿrgɽϵc(din)xAL

          3܇(jng)^Aڿ\(yn)^УxɽABh(yun)xǶ

          𰸡15m 250m 33m

          ԇ}܇x_Oc(din)ƽ\(yn)Qֱw\(yn)ˮƽ\(yn)ӣ빫ʽɽ}O(sh)܇ڿwеĕrgtc(din)xAc(din)xLY(ji)ƽʽ͎׺P(gun)ϵ܇ڿwеĿrgɽϵc(din)xALȺ;xɽABh(yun)x

          1܇ƽ\(yn)ӣˮƽx1=v0t1=15m

          ߶Ȟ飺

          2O(sh)܇ڿwеĕrgtc(din)xAc(din)xL

          ˮƽx=v0t

          λP(gun)ϵ飺

          “(lin)ãt=3s

          ˮƽLcos53=x-x1

          ãL=50m

          3܇ٶcABƽЕrxɽh(yun)O(sh)Oc(din)wxɽh(yun)rgt2

          ٶP(gun)ϵ飺

          QֱٶȞ飺vy=gt2

          “(lin)ãt2=2s

          Qֱλƞ飺

          (j)P(gun)ϵ

          l=v0t2-t1-x

          ABh(yun)xdm=lsin53=3m

          (x)ϵд
          P(gun)(x)}

          Ŀ Դ

          }ĿDʾˮƽõĈAP돽R=1mCc(din)̶һ߶ȲӋ(j)СͰڈAPֱCDϷһlˮƽABcCDƽУҶBcAPAOͬһQֱ߶Ȳh=1.25mڻoֹ|(zh)m=0.4kgKҕ|(zh)c(din)KcgĄĦ(sh)=0.2(dng)һСF=4NˮƽKͬrAPĈDʾλԽٶ=2rad/s@^AOQֱSD(zhun)ӣһΕrg󳷵Kڻ^m(x)УBc(din)ˮƽǡСͰ(ni)ٶȡ10m/s2

          1õ̕rg

          2Õrg0.5sKܷСͰ(ni)軬LՈf

          鿴𰸺ͽ>>

          Ŀ Դ

          }Ŀ|(zh)2kgwQֱƽ(ni)h=3mĹ⻬܉Ac(din)v0=2m/sijٶ܉M(jn)BC܉Dʾ֪BCεĻĦϵ(sh)=0.4gȡ10m/s2

          x酢ƽAc(din)r,wܞ٣

          wAc(din)Bc(din)^w

          3wBc(din)rٶ

          4wֹͣxBc(din)h(yun)λϣ

          鿴𰸺ͽ>>

          Ŀ Դ

          }ĿDʾˮƽ^ֲڵ܉ABc̎Qֱƽ(ni)İAν^⻬܉BCƽBA܉İ돽R04m܉ڿgˮƽҵĄ(qing)늈늈c܉ڵƽƽ늈(qing)E10104NCF(xin)һ늺q10104C|(zh)m01kgĎwҕ|(zh)c(din)ˮƽ܉ϵPc(din)oֹጷţwǡͨ^A܉c(din)CȻˮƽ܉ϵDc(din)ȡg10ms2ԇ

          1w\(yn)ӵA܉Bc(din)rA܉ĉ

          2Dc(din)Bc(din)ľxXDB

          3wڏP_ʼ\(yn)ӵDc(din)^е

          鿴𰸺ͽ>>

          Ŀ Դ

          }ĿһƿbƿˮȻƿwwoʹܷúƿ(ni)ˮϷγˮ֪ˮSضȵ߶󣬄t

          A˕rƿϷ՚100%

          B˕rˮӏҺB(ti)ˮwM(jn)w

          Cϵy(tng)Ĝضtƿ(ni)w(ni)ڵĉ(qing)pС

          Dϵy(tng)ĜضȽtƿ(ni)ˮܶȕpС

          Eƿ_ƿڸh(hun)УƿеҺB(ti)ˮʧ

          鿴𰸺ͽ>>

          Ŀ Դ

          }ĿijͬW(xu)DʾČ(sh)(yn)bоƽ\(yn)Č(sh)(yn)

          1(sh)(yn)rЩDZ횵________(̖)

          ٌб܉ĩ{(dio)ˮƽ

          ƽQС|(zh)

          ÿζҪ׌Сͬһλoֹ_ʼ\(yn)ӣ

          2(sh)(yn)rͬW(xu)ӛڰ׼ӛС򒁳c(din)λ(j)(sh)(yn)ӛ䛵c(din)E\(yn)܉Eԓȡˮƽxx20.00 cmc(din)ABCDʾc(din)gQֱxքey110.00 cmy220.00 cm.С\(yn)^ܿ՚ԲӋ(j)Ո(j)ϔ(sh)(j)Ӌ(j)Сٶv0________ m/s.(gȡ10 m/s2)

          鿴𰸺ͽ>>

          Ŀ Դ

          }ĿDʾ,ɸƽй⻬Ľٌ(do)܉MNPQˮƽϏ(do)܉gL費Ӌ(j)ˮƽΌ(do)܉̎gڷQֱϵĄ(qing)ňŸБ(yng)(qing)ȞB(do)wab|(zh)mֵքeRa=R,Rb=2R.bˮƽ(do)܉Ҿ܉ײLo̎aڏ܉Ͼˮƽh߶̎oֹጷ\(yn)^Ќ(do)܉͌(do)܉|ʼK͌(do)܉ֱٶȞg

          1aM(jn)ňrܵİ

          2a_ʼ䵽K(wn)^aϮa(chn)ă(ni)

          3(dng)ab\(yn)K(wn)rabg

          鿴𰸺ͽ>>

          Ŀ Դ

          }ĿDʾɂglƽй⻬܉ˮƽ(L)܉(c)ЃɂֵRĶֵ_P(gun)̎ڔ_B(ti)һ|(zh)mRĽٰoֹc܉ֱط܉ϣٰc܉늽|܉費Ӌ(j)gڴֱ܉ƽĴŸБ(yng)(qing)ȞBĄ(qing)ňF(xin)һʺ㶨P0ˮƽ܉ٰ(dng)ٰٶȷ(wn)]_P(gun)Kf_

          A. ]_P(gun)rٰٶȞ

          B. ]_P(gun)rٰļٶȞ

          C. ^ͰٰĹ·Юa(chn)Ľ

          D. ]_P(gun)ǰٰٶȷ(wn)rٰğṦ֮Ȟ23

          鿴𰸺ͽ>>

          Ŀ Դ

          }Ŀ̫ϵ˴ǎ׺ͬһƽ(ni)ͬһ@̫A\(yn)(dng)?sh)ǡ\(yn)еǺ̫֮gߎ׺һlֱĬF(xin)ČW(xu)QǛ_(j)(bo)һΛ_2017615ա֪@̫\(yn)ӵ܉돽@̫\(yn)ӵ܉돽9 5tД_

          A. @̫\(yn)ٶȼs@̫\(yn)ٶȵ

          B. 2018ٴγF(xin)Ǜ_լF(xin)

          C. @̫ꖹD(zhun)ڼs

          D. ɴΛ_յĕrggСһ

          鿴𰸺ͽ>>

          ͬ(x)Դ