Video: Yuav ua li cas koj nrhiav tau acceleration ntawm ceev?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
xam kev ceev koom nrog kev faib ceev los ntawm lub sij hawm - los yog nyob rau hauv cov nqe lus ntawm SI units, faib lub 'meter' ib ob [m / s] los ntawm lub 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 kev ceev yog tus ' meter ' ib secondsquared.
Tsis tas li lo lus nug yog, koj ua li cas nrhiav kev nrawm nrog nrawm thiab sijhawm?
Siv cov qauv nrhiav kev ceev . Ua ntej sau koj kev sib npaug thiab tag nrho cov kev hloov pauv tau muab. Cov kev sib npaug a = Δv / t = (vf -vi)/(tf -ti). Tshem tawm qhov pib ceev los ntawm qhov kawg ceev , ces faib qhov tshwm sim los ntawm cov sij hawm lub sijhawm. Qhov kawg tshwm sim yog koj qhov nruab nrab kev ceev tshaj ntawd sij hawm.
Ib sab saum toj no, ua li cas koj pom lub sijhawm tsis muaj kev nrawm? v2 = u2 + 2as rau ib qho particle undergoing tas li kev ceev . Hauv qhov no pf ib qho 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 velocityover tag nrho cov kev hloov nyob rau hauv sij hawm.
Nyob rau hauv no hais txog, dab tsi yog lub formula rau ceev?
daws rau ceev los yog siv tus nqi formula forspeed , s = d/t uas txhais tau tias ceev sib npaug nrug faib raws sij hawm. Yuav kom daws tau lub sijhawm siv lub qauv rau lub sij hawm, t = d / uas txhais tau hais tias lub sij hawm sib npaug zos nrug muab faib los ntawm ceev.
Qhov nruab nrab acceleration yog dab tsi?
Nruab nrab acceleration yog tus nqi ntawm qhov kev hloov pauv. Nruab nrab acceleration yog qhov hloov pauv invelocity faib los ntawm lub sijhawm dhau mus. Piv txwv li, yog tias qhov nrawm ntawm marble nce ntawm 0 mus rau 60 cm / s hauv 3 vib nas this, nws nruab nrab acceleration yuav yog 20 cm/s/s.
Pom zoo:
Yuav ua li cas koj nrhiav tau qhov acceleration tsis tu ncua?
Tsis tu ncua acceleration Txij li thaum peb siv meters thiab vib nas this raws li peb theem pib units, peb yuav ntsuas acceleration nyob rau hauv meters ib ob ib ob. Piv txwv li, yog tias qhov nrawm ntawm ib qho kev txav mus rau hauv txoj kab ncaj nraim hloov pauv tsis tu ncua (ntawm qhov hloov pauv tsis tu ncua) los ntawm 2 m / s txog 5 m / s dhau ib thib ob, ces nws qhov nrawm nrawm yog 3 m / s2
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 yoj ceev muab zaus thiab wavelength?
Ceev = Wavelength x Wave Frequency. Hauv qhov sib npaug no, wavelength yog ntsuas hauv meters thiab zaus ntsuas hauv hertz (Hz), lossis tus naj npawb ntawm nthwv dej ib ob. Yog li ntawd, yoj ceev yog muab nyob rau hauv meters ib ob, uas yog lub SI unit rau ceev
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
Yuav ua li cas koj thiaj nrhiav tau qhov ceev vs lub sij hawm daim duab?
Txoj kab nqes ntawm txoj kab ntawm txoj hauj lwm vs lub sij hawm daim duab yog sib npaug rau qhov tshaj tawm ntawm cov khoom. Qhov nqes hav ntawm kab ntawm qhov tshaj tawm vs lub sij hawm daim duab yog sib npaug rau acceleration ntawm cov khoom