Video: Yuav ua li cas koj ntsuas qhov ceev thiab acceleration?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Lub hauv paus ntsiab lus yog txoj kab nqes ntawm txoj kab ntawm a nrawm - sij hawm daim duab nthuav tawm cov ntaub ntawv tseem ceeb ntawm cov kev ceev ntawm qhov khoom. Yog tias kev ceev yog xoom, ces txoj kab nqes yog xoom (piv txwv li, kab rov tav). Yog tias kev ceev yog qhov zoo, ces txoj kab nqes yog qhov zoo (piv txwv li, txoj kab nqes nqes mus).
Ib yam li ntawd, tus qauv ntawm kev hloov pauv yog dab tsi?
Taw qhia rau lub Kev khiav tawm thiab Acceleration Equation Nws nyeem: Kev khiav tawm sib npaug qhov qub tshaj tawm los ntawm lub sij hawm ntxiv rau ib nrab ntawm qhov acceleration multiplied los ntawm lub square ntawm lub sij hawm. Ntawm no yog ib qho piv txwv teeb meem thiab nws txoj kev daws teeb meem uas qhia txog kev siv qhov sib npaug: Ib qho khoom txav nrog qhov nrawm ntawm 5.0 m / s.
Ib yam li ntawd, tus qauv rau qhov nruab nrab tshaj tawm yog dab tsi? Nruab nrab ceev (v) ntawm ib yam khoom yog sib npaug rau nws qhov kawg nrawm (v) plus pib nrawm (u), muab faib ua ob. Qhov twg: ¯v = nruab nrab ceev . v = final nrawm.
Yog li ntawd, qhov kev sib raug zoo ntawm kev nrawm thiab nrawm yog dab tsi?
Kev nrawm yog tus nqi ntawm kev hloov ntawm txoj hauj lwm nrog rau lub sij hawm, whereas kev ceev yog tus nqi hloov ntawm nrawm . Ob leeg yog vector kom muaj nuj nqis (thiab yog li tseem muaj cov lus qhia tshwj xeeb), tab sis cov units ntawm nrawm yog meters ib ob thaum lub units ntawm kev ceev yog meters ib ob squared.
Koj pom qhov nrawm li cas?
Faib tag nrho cov kev hloov pauv los ntawm lub sijhawm tag nrho. Nyob rau hauv thiaj li yuav nrhiav tus nrawm ntawm cov khoom txav, koj yuav tsum tau faib cov kev hloov pauv hauv txoj haujlwm los ntawm kev hloov hauv lub sijhawm. Qhia meej qhov kev taw qhia txav, thiab koj muaj qhov nruab nrab nrawm.
Pom zoo:
Yuav ua li cas koj pom qhov ntsuas qhov ntsuas ntawm dilation ntawm lub dav hlau ua haujlwm?
Daim duab peb sab ABC nrog kev ua haujlwm A(2, 6), B(2, 2), C(6, 2). Tom qab ntawd dilate daim duab los ntawm qhov ntsuas qhov ntsuas ntawm 1/2 nrog lub hauv paus los ua qhov nruab nrab ntawm dilation. Ua ntej, peb kos peb daim duab peb sab qub hauv lub dav hlau ua haujlwm. Tom ntej no, peb muab txhua qhov kev sib koom tes los ntawm qhov ntsuas qhov ntsuas ntawm 1/2
Yuav ua li cas koj hloov ceev mus rau acceleration graph?
Yog hais tias daim duab yog tshaj tawm vs lub sij hawm, ces nrhiav qhov chaw yuav muab rau koj tsiv, vim hais tias ceev = tawm / sij hawm. Yog tias daim duab acceleration vs lub sij hawm, ces nrhiav qhov chaw muab rau koj hloov nyob rau hauv ceev, vim acceleration = hloov nyob rau hauv tshaj tawm / lub sij hawm
Dab tsi yog qhov txawv ntawm qhov pom tseeb qhov loj thiab qhov ntsuas qhov ntsuas qhov tseeb?
Dab tsi yog qhov txawv ntawm qhov pom tseeb thiab qhov tseeb? Pom meej qhov loj npaum li cas yog qhov ci ntawm lub hnub qub tshwm los ntawm lub ntiaj teb thiab nyob ntawm qhov ci thiab qhov deb ntawm lub hnub qub. Qhov loj npaum li cas yog qhov ci ntawm lub hnub qub yuav tshwm sim los ntawm tus qauv nyob deb
Yuav ua li cas koj nrhiav tau ceev nrog acceleration thiab lub sij hawm?
Yog hais tias lub acceleration yog tas li, ces acceleration = hloov nyob rau hauv ceev / sij hawm rau qhov kev hloov. Yog li qhov kev hloov ntawm qhov nrawm yog qhov accelerationtimes lub sijhawm. Koj tseem yuav tsum paub qhov pib nrawm uas koj ntxiv rau qhov kev hloov pauv. (Yog tias acceleration tsis tas li koj xav tau kev suav.)
Dab tsi yog qhov txawv ntawm instantaneous thiab nruab nrab ceev dab tsi yog qhov piv txwv loj tshaj ntawm kev ceev ceev?
Qhov nruab nrab ceev yog qhov ceev nruab nrab ntawm lub sijhawm. Instantaneous ceev yuav yog qhov ceev txhua qhov muab tam sim ntawd hauv lub sijhawm ntawd, ntsuas nrog lub ntsuas ntsuas lub sijhawm