Qhov nruab nrab tshaj tawm thiab nws cov qauv yog dab tsi?
Qhov nruab nrab tshaj tawm thiab nws cov qauv yog dab tsi?

Video: Qhov nruab nrab tshaj tawm thiab nws cov qauv yog dab tsi?

Video: Qhov nruab nrab tshaj tawm thiab nws cov qauv yog dab tsi?
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Qhov nruab nrab Velocity Formula (Kev hloov pauv raws sijhawm) Qhov nrawm ntawm ib yam khoom yog tus tus nqi uas nws txav ntawm ib txoj hauj lwm mus rau lwm qhov. Qhov nruab nrab ceev yog tus qhov sib txawv ntawm tus pib thiab xaus txoj haujlwm, faib los ntawm tus qhov sib txawv ntawm tus pib thiab xaus sijhawm.

Ntawm 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, SI unit ntawm qhov nruab nrab tshaj tawm yog dab tsi? meters ib ob

Ib tug kuj yuav nug, dab tsi yog qhov ceev ceev formula?

Ceev ceev (v) yog vector kom muaj nuj nqis uas ntsuas kev txav chaw (los yog hloov hauv txoj hauj lwm, Δs) dhau qhov kev hloov ntawm lub sij hawm (Δt), sawv cev los ntawm kev sib npaug v = s/t. Ceev (los yog tus nqi, r) yog ib tug scalar kom muaj nuj nqis uas ntsuas qhov kev ncua deb mus txawv tebchaws (d) nyob rau hauv lub hloov nyob rau hauv lub sij hawm (Δt), sawv cev los ntawm lub kev sib npaug r = d/t.

Qhov txawv ntawm qhov ceev thiab ceev yog dab tsi?

Cov lus teb luv luv yog qhov ntawd ceev yog cov ceev nrog kev taw qhia, thaum ceev tsis muaj kev taw qhia. Ceev yog scalar kom muaj nuj nqis-nws yog qhov loj ntawm qhov ceev . 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).

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