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Video: Yuav ua li cas koj nrhiav tau qhov acceleration tsis tu ncua?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Tsis tu ncua acceleration
- Txij li thaum peb siv meters thiab vib nas this raws li peb cov chav hauv paus, peb yuav ntsuas kev ceev nyob rau hauv meters ib feeb ib ob.
- Piv txwv li, yog hais tias qhov ceev ntawm ib tug particle txav nyob rau hauv ib tug ncaj kab hloov uniformly (ntawm a tas li tus nqi hloov pauv) los ntawm 2 m / s mus rau 5 m / s dhau ib thib ob, ces nws acceleration tsis tu ncua yog 3m/s2.
Yog li ntawd, dab tsi yog qhov acceleration nyob rau hauv physics?
Qee zaum ib ceev cov khoom yuav hloov nws qhov nrawm los ntawm tib tus nqi txhua ob. Qhov no yog hu ua a acceleration tsis tu ncua vim lub nrawm hloov los ntawm a tas li tus nqi txhua thib ob. Ib yam khoom nrog a acceleration tsis tu ncua yuav tsum tsis txhob totaub nrog ib yam khoom nrog a tas li ceev.
Tsis tas li ntawd, koj yuav ua li cas thiaj nrhiav tau qhov nrawm nrawm yam tsis muaj sijhawm? 3 Teb. v2 = u2 + 2as rau ib qho particle undergoing acceleration tsis tu ncua . Hauv qhov no pf qhov sib txawv kev ceev , cov qauv no tuaj yeem siv rau xam qhov "nruab nrab" kev ceev , uas sawv cev rau tag nrho cov kev hloov nyob rau hauv tshaj tawm tag nrho cov kev hloov nyob rau hauv sij hawm.
Ntxiv mus, dab tsi yog lub mis rau uniform acceleration?
Thaum ib yam khoom yog ceev ntawm a tas li ntsuas nws cov lus tsa suab tuaj yeem ua qauv los ntawm ob qho yooj yim kev sib npaug , a = (Vf - Vi) / t and d = 1/2 (Vf + Vi) × t.
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.
Pom zoo:
Yuav ua li cas koj yuav nrhiav tau nyob ze qhov kawg yog nws sab qaum teb ncej nyob?
Teb. Qhov chaw ntawm tus ncej ntawm li hlau nplaum tuaj yeem txiav txim siab los ntawm kev ncua nws dawb. Ib qho kev txwv tsis pub pub dawb bar hlau nplaum ib txwm taw qhia rau sab qaum teb thiab sab qab teb. Qhov kawg uas taw tes rau sab qaum teb yog tus ncej qaum teb ntawm cov hlau nplaum thaum kawg uas cov ntsiab lus mus rau sab qab teb yog tus ncej sab qab teb ntawm cov hlau nplaum
Ua li cas koj thiaj nrhiav tau qhov ntom ntawm ib qho hlau tsis paub?
Ceev = mass/volume. Xav tias koj yuav tsum txheeb xyuas cov hlau tsis paub. Koj tuaj yeem txiav txim siab qhov loj ntawm cov hlau ntawm qhov ntsuas. Koj tuaj yeem txiav txim siab qhov ntim los ntawm kev xa cov khoom mus rau hauv ib lub tog raj kheej kawm tiav uas muaj cov ntim dej paub thiab ntsuas qhov ntim tshiab
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.)
Yuav ua li cas koj nrhiav tau acceleration ntawm ceev?
Kev suav acceleration suav nrog kev faib nrawm los ntawm lub sijhawm - lossis hauv cov ntsiab lus ntawm SI units, faib cov ntsuas ib ntus [m / s] los ntawm qhov thib ob [s]. Kev faib nrug los ntawm lub sij hawm ob zaug yog tib yam li kev faib nrug los ntawm lub square ntawm lub sij hawm.Yog li lub SI unit ntawm acceleration yog tus ' meter ' ib secondsquared
Henri Becquerel nrhiav tau dab tsi uas ua rau nws tau txais 1903 Nobel nqi zog Nws nrhiav tau dab tsi txog lub caij uranium?
Teb: Henri Becquerel tau txais ib nrab ntawm qhov khoom plig rau nws qhov kev tshawb pom ntawm cov hluav taws xob tsis zoo. Teb: Marie Curie tau kawm txog cov hluav taws xob ntawm tag nrho cov tebchaw uas muaj cov xov tooj cua paub, suav nrog uranium thiab thorium, uas nws tom qab pom kuj tseem muaj xov tooj cua