Video: Dab tsi yog qhov zoo sib xws thiab qhov sib txawv ntawm qhov nrawm thiab nrawm?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Daim duab piv
| Basis rau Kev sib piv | Ceev | Kev nrawm |
|---|---|---|
| Tus nqi ntawm | Hloov qhov nrug | Kev hloov pauv |
| Thaum lub cev rov qab mus rau nws qhov chaw pib | Yuav tsis yog xoom | Yuav yog xoom |
| Tsiv khoom | Ceev ntawm cov khoom txav tsis tuaj yeem tsis zoo. | Kev nrawm ntawm cov khoom txav tuaj yeem yog qhov zoo, tsis zoo lossis xoom. |
Ib yam li ntawd, nws raug nug, dab tsi yog qhov tseem ceeb zoo sib xws ntawm kev nrawm thiab nrawm?
Ceev thiab ceev ob qho tib si sawv cev ib txoj hauv kev los ntsuas qhov kev hloov ntawm txoj hauj lwm ntawm ib qho khoom txheeb ze rau lub sijhawm. Qhov tseeb, rau txoj kab ncaj nraim, lub ceev thiab ceev ntawm ib yam khoom yog tib yam (vim qhov deb thiab txav yuav zoo ib yam). Ceev thiab ceev ntsuas nyob rau hauv tib units: meters ib ob los yog m / s.
Qhov thib ob, qhov twg hauv qab no yog qhov txawv ntawm qhov nrawm thiab nrawm? Kev nrawm yog vector kom muaj nuj nqis tab sis ceev yog scaler kom muaj nuj nqis. LUB BASIC DIFFERENCE BETWEEN SPEED THIAB VELOCITY IB: 1. HLUB YOG MAGNITUDE nkaus xwb thiab tsis muaj kev taw qhia qhov twg VELOCITY Muaj ob leeg MAGNITUDE thiab DIRECTION. HLUB YUAV UA LI CAS YUAV TSUM TAU TXAIS (TSIS TSIS - tsis zoo thiab tsis yog-ZERO) THAUM VELOCITY YOG TXOJ CAI TSHIAB.
Raws li txoj cai, qhov ceev thiab nrawm zoo sib xws thiab txawv li cas?
Cov lus teb luv luv yog qhov ntawd nrawm yog cov ceev nrog kev taw qhia, thaum ceev tsis muaj kev taw qhia. Ceev yog ib qho scalar ntau-nws yog qhov loj ntawm qhov nrawm . Ceev yog ntsuas nyob rau hauv units ntawm qhov kev ncua deb muab faib los ntawm lub sij hawm (piv txwv li, mais ib teev, ko taw ib ob, meters ib ob, thiab lwm yam).
Dab tsi yog qhov sib txawv ntawm kev tshaj tawm thiab kev txav chaw?
Kev khiav tawm thiab Kev nrawm . Kev khiav tawm yog vector qhov sib txawv ntawm qhov kawg thiab pib txoj hauj lwm ntawm ib yam khoom. Kev nrawm yog tus nqi uas hloov chaw hloov nrog lub sijhawm. Qhov nruab nrab nrawm dhau qee lub sijhawm yog tag nrho hloov chaw thaum lub sijhawm ntawd, muab faib los ntawm lub sijhawm.
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