Qhov loj puas muaj kev taw qhia?
Qhov loj puas muaj kev taw qhia?

Video: Qhov loj puas muaj kev taw qhia?

Video: Qhov loj puas muaj kev taw qhia?
Video: Tshuaj theem vim li cas thiaj tau nqi ?/ Siv kho mob dab tsi?/paris polyphylla use for? 2024, Kaum ib hlis
Anonim

Ib vector kom muaj nuj nqis muaj a kev taw qhia thiab a qhov loj , thaum ib tug scalar muaj tsuas yog ib qhov loj . Koj tuaj yeem qhia tau yog tias muaj ntau yog ib vector los yog tsis nws muaj a kev taw qhia txuam nrog nws.

Ib yam li ntawd, qhov loj npaum li cas yog qhov taw qhia?

Ntawm qhov tod tes, nrawm, hauv Physics, yuav tsum tau nthuav tawm raws li vector nrog ob qho tib si a qhov loj thiab a kev taw qhia . Piv txwv li, 5 m / s Eastward yog qhov nrawm vim nws qhia koj qhov loj ntawm lub zog, 5 meters ib ob, raws li zoo raws li lub kev taw qhia uas yog Eastward.

Tsis tas li ntawd, qhov loj thiab kev coj ntawm vector yog dab tsi? A vector yog ib yam khoom uas muaj ob qho tib si a qhov loj thiab a kev taw qhia . Ob lub zog thiab nrawm yog nyob rau hauv ib qho tshwj xeeb kev taw qhia . Cov qhov loj ntawm vector yuav qhia tau hais tias lub zog ntawm lub zog los yog speedssociated nrog lub nrawm. Peb qhia cov duab siv boldface li hauv ib lossis b.

Ntxiv mus, koj yuav nrhiav tau qhov loj thiab kev taw qhia ntawm lub nrawm li cas?

Rau xam tus qhov loj ntawm ceev ntawm txhua lub sijhawm, muab qhov sib npaug ntawm qhov sib npaug ntawm lub sijhawm sib txawv thiab tom qab ntawd ntxiv rau qhov pib ceev . Piv txwv li, yog tias koj poob ib pob zeb tawm ntawm acliff, nws ceev nce los ntawm 32 ko taw ib ob, txhua thib ob.

Qhov magnitude motion yog dab tsi?

Hais txog kev loj hlob, qhov loj alludes mus rau qhov tshaj tawm uas ib yam khoom yog voyaging los yog nws loj. Kev tshawb nrhiav ntawm tsab ntawv tsa suab nrug, tshaj tawm, ceev kuj massexpressed raws li qhov ntau - yog cais nyob rau hauv nruab nrab ntawmvectors thiab scalars.

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