Qhov nruab nrab nrawm hauv physics yog dab tsi?
Qhov nruab nrab nrawm hauv physics yog dab tsi?

Video: Qhov nruab nrab nrawm hauv physics yog dab tsi?

Video: Qhov nruab nrab nrawm hauv physics yog dab tsi?
Video: Tshuaj theem vim li cas thiaj tau nqi ?/ Siv kho mob dab tsi?/paris polyphylla use for? 2024, Kaum ib hlis
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Nruab Nrab Velocity , Txoj kab ncaj

Cov nruab nrab ceev ntawm ib yam khoom yog txhais raws li qhov kev ncua deb uas tau muab faib los ntawm lub sij hawm elapsed. Ceev ceev yog vector kom muaj nuj nqis, thiab nruab nrab ceev tuaj yeem txhais tau tias qhov kev hloov pauv tau muab faib los ntawm lub sijhawm.

Xav txog qhov no, dab tsi yog tus qauv rau nruab nrab tshaj tawm?

Nruab nrab ceev (v) ntawm ib yam khoom yog sib npaug rau nws qhov kawg ceev (v) plus pib ceev (u), muab faib ua ob. Qhov twg: ¯v = nruab nrab ceev . v = final ceev.

Tsis tas li ntawd, qhov sib txawv ntawm qhov nrawm thiab qhov nruab nrab yog dab tsi? Ib nruab nrab ceev tiag tiag siv qhov kev ncua deb hauv a muab sijhawm rau thiab nruab nrab ceev yuav yog qhov kev ncua deb muab faib los ntawm lub sijhawm. Ib qhov tseeb ceev yog ib qho instantaneous kom muaj nuj nqis. Cov txawv lub sij hawm yog dX/dt qhov twg dt yog ib qho infintiesimaly me me ntawm lub sij hawm thiab dX yog qhov kev hloov hauv txoj hauj lwm thaum lub sij hawm ntawd.

Tom qab ntawd, ib tug kuj yuav nug, koj txhais li cas los ntawm qhov nruab nrab tshaj tawm?

Nruab Nrab Velocity . Cov nruab nrab ceev ntawm ib yam khoom yog nws tag nrho kev hloov chaw muab faib los ntawm tag nrho lub sij hawm coj. Hauv lwm lo lus, nws yog tus nqi ntawm qhov khoom hloov pauv nws txoj haujlwm ntawm ib qho chaw mus rau lwm qhov. Nruab nrab ceev yog Vector kom muaj nuj nqis. SI unit yog meters ib ob.

Dab tsi yog qhov txhais ntawm kev nrawm hauv physics?

Ceev ceev yog txhais raws li kev ntsuas vector ntawm tus nqi thiab kev taw qhia ntawm kev txav. Muab tso yooj yim, ceev yog qhov ceev uas ib yam dab tsi txav mus rau hauv ib qho kev taw qhia. Qhov ceev ntawm lub tsheb mus rau sab qaum teb ntawm txoj kev loj loj thiab qhov ceev ntawm lub foob pob hluav taws tso rau hauv qhov chaw tuaj yeem ntsuas tau siv. ceev.

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