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src="http://math.21cnjy.com/MathMLToImage?mml=%3Cmath+xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F1998%2FMath%2FMathML%22%3E%3Cmi%3EO%3C%2Fmi%3E%3Cmi%3Ex%3C%2Fmi%3E%3Cmi%3Ey%3C%2Fmi%3E%3C%2Fmath%3E" style="max-width:100%;vertical-align: middle;">平面上運(yùn)動(dòng)。它在<img class="mathml" src="http://math.21cnjy.com/MathMLToImage?mml=%3Cmath+xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F1998%2FMath%2FMathML%22%3E%3Cmi%3Ex%3C%2Fmi%3E%3C%2Fmath%3E" style="max-width:100%;vertical-align: middle;">方向運(yùn)動(dòng)的速度一時(shí)間圖像如圖甲所示，它在<img class="mathml" src="http://math.21cnjy.com/MathMLToImage?mml=%3Cmath+xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F1998%2FMath%2FMathML%22%3E%3Cmi%3Ey%3C%2Fmi%3E%3C%2Fmath%3E" style="max-width:100%;vertical-align: middle;">方向運(yùn)動(dòng)的速度一時(shí)間圖像如圖乙所示。則（　?。?p><img width="314" height="154" src="http://tikupic.21cnjy.com/2024/03/22/1a/4a/1a4a256564205cb326e9327b0a53c8f1.png" style="max-width:100%;"></p> </h1> <div id="opz3edh" class="exam-s"> <span id="rbvxuk3" class="op-item"><span id="vqth6i3" class="op-item-nut">A . </span><span id="2mee7g2" class="op-item-meat"><img class="mathml" src="http://math.21cnjy.com/MathMLToImage?mml=%3Cmath+xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F1998%2FMath%2FMathML%22%3E%3Cmi%3Et%3C%2Fmi%3E%3Cmo%3E%3D%3C%2Fmo%3E%3Cmn%3E0%3C%2Fmn%3E%3C%2Fmath%3E" style="max-width:100%;vertical-align: middle;">時(shí)質(zhì)點(diǎn)速度的大小為<img class="mathml" src="http://math.21cnjy.com/MathMLToImage?mml=%3Cmath+xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F1998%2FMath%2FMathML%22%3E%3Cmn%3E5%3C%2Fmn%3E%3Cmtext%3Em%3C%2Fmtext%3E%3Cmn%3E%2F%3C%2Fmn%3E%3Cmtext%3Es%3C%2Fmtext%3E%3C%2Fmath%3E" style="max-width:100%;vertical-align: middle;"></span></span> <span id="iuex4oe" class="op-item"><span id="mhqrdm1" class="op-item-nut">B . </span><span id="qdsxifx" class="op-item-meat"><img class="mathml" src="http://math.21cnjy.com/MathMLToImage?mml=%3Cmath+xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F1998%2FMath%2FMathML%22%3E%3Cmn%3E2%3C%2Fmn%3E%3Cmtext%3Es%3C%2Fmtext%3E%3C%2Fmath%3E" style="max-width:100%;vertical-align: middle;">內(nèi)質(zhì)點(diǎn)的加速度為<img class="mathml" src="http://math.21cnjy.com/MathMLToImage?mml=%3Cmath+xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F1998%2FMath%2FMathML%22%3E%3Cmn%3E1%3C%2Fmn%3E%3Cmtext%3Em%3C%2Fmtext%3E%3Cmn%3E%2F%3C%2Fmn%3E%3Cmsup%3E%3Cmrow%3E%3Cmtext%3Es%3C%2Fmtext%3E%3C%2Fmrow%3E%3Cmrow%3E%3Cmn%3E2%3C%2Fmn%3E%3C%2Fmrow%3E%3C%2Fmsup%3E%3C%2Fmath%3E" style="max-width:100%;vertical-align: middle;"></span></span> <span id="3kcdkb8" class="op-item"><span id="eqlli66" class="op-item-nut">C . </span><span id="v3ti1o4" class="op-item-meat"><img class="mathml" src="http://math.21cnjy.com/MathMLToImage?mml=%3Cmath+xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F1998%2FMath%2FMathML%22%3E%3Cmn%3E2%3C%2Fmn%3E%3Cmtext%3Es%3C%2Fmtext%3E%3C%2Fmath%3E" style="max-width:100%;vertical-align: middle;">內(nèi)質(zhì)點(diǎn)做勻變速直線運(yùn)動(dòng)</span></span> <span id="p3l68wm" class="op-item"><span id="tyau1ap" class="op-item-nut">D . </span><span id="ax10gvy" class="op-item-meat"><img class="mathml" src="http://math.21cnjy.com/MathMLToImage?mml=%3Cmath+xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F1998%2FMath%2FMathML%22%3E%3Cmn%3E2%3C%2Fmn%3E%3Cmtext%3Es%3C%2Fmtext%3E%3C%2Fmath%3E" style="max-width:100%;vertical-align: middle;">內(nèi)質(zhì)點(diǎn)的位移大小為<img class="mathml" src="http://math.21cnjy.com/MathMLToImage?mml=%3Cmath+xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F1998%2FMath%2FMathML%22%3E%3Cmn%3E5%3C%2Fmn%3E%3Cmtext%3Em%3C%2Fmtext%3E%3C%2Fmath%3E" style="max-width:100%;vertical-align: middle;"></span></span> </div> </div> </div> </li> </ul> <div style="height:20px;background-color: #fff;margin-top:1px"></div>  <div class="5cywdky" id="J_ConnectQuestionsdBox"> </div> </div> </div> <div id="hgk98vo" class="g-sd2">  <div style="background:#fff;padding:20px 0;margin-bottom:20px;text-align:center;"> <img src="/question/paper-qrcode?id=56110539" width="140px" height="140px" alt=""> <p style="text-align:center;margin-top: 10px">微信掃碼預(yù)覽、分享更方便</p> </div> 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