Puas yog qhov nrug yog vector kom muaj nuj nqis?
Puas yog qhov nrug yog vector kom muaj nuj nqis?

Video: Puas yog qhov nrug yog vector kom muaj nuj nqis?

Video: Puas yog qhov nrug yog vector kom muaj nuj nqis?
Video: Thaum muaj txoj kev nyuaj siab yuav ua li cas...? _ LIS XYOOJ muab lus qhia. 2024, Kaum ib hlis
Anonim

Qhov deb yog ib qho scalar ntau uas yog hais txog "ntau npaum li cas hauv av ib yam khoom tau npog" thaum nws txav. Displacementis ib vector kom muaj nuj nqis uas hais txog "yuav deb npaum li cas ntawm qhov chaw anobject yog"; nws yog tus kwv lub zuag qhia tag nrho kev hloov inposition.

Ntawm no, yog qhov kev ncua deb yog ib qho scalar kom muaj nuj nqis?

Kev hloov pauv yog vector kom muaj nuj nqis thiab tsis yog a scalar kom muaj nuj nqis vim nws tuaj yeem yog A scalarquantity yog ib qho uas tuaj yeem piav qhia los ntawm nws qhov loj xwb thiab tsis xav tau kev taw qhia. Ceev yog ib scalarquantity . Nyob deb , ntawm qhov tod tes, yog a scalarquantity , txij li thaum peb yuav tsum paub tsuas yog txog cov pathtaken.

Ib yam li ntawd, tag nrho qhov nrug yog vector lossis scalar Vim li cas? Kev piav qhia: Scalar Qhov ntau muab qhov loj, thaum vector Qhov ntau muab qhov loj thiab qhov taw qhia. Cov lus teb yuav yog ib qho kev ntsuas uas yuav tsum tau ua nyob rau hauv ib qho kev taw qhia. Nyob deb yog ib qho kev ntsuas ntawm qhov ntev, tsis hais qhov kev taw qhia.

Hais txog qhov no, dab tsi yog vector kom muaj nuj nqis?

Piv txwv li, kev khiav tawm, nrawm, thiab acceleration yog vector ntau , thaum ceev (qhov loj ntawm qhov nrawm), lub sijhawm, thiab qhov hnyav yog qhov ntsuas. Kom tsim nyog raws li ib tug vector , a kom muaj nuj nqis muaj qhov loj thiab kev taw qhia yuav tsum ua raws qee cov cai ntawm kev sib xyaw ua ke.

Puas yog txoj hauj lwm vector?

Kub, ceev, huab hwm coj, thiab ntim yog piv txwv ntawm scalars. Vectors muaj qhov loj thiab kev taw qhia. Lub magnitudeof yog sau | | v. Txoj hauj lwm , hloov chaw, tshaj tawm, acceleration thiab quab yuam yog piv txwv ntawm vector qhov ntau.

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