Yog tsis muaj huab cua tiv thaiv tam sim no, tus nqi ntawm qhovntsej thiaj tsis mob tsuas yog nyob ntawm qhov deb ntawm qhov khoom poob, txawm tias qhov khoom hnyav npaum li cas. Qhov no txhais tau hais tias ob yam khoom yuav ncav cuag hauv av tib lub sijhawmyog tias lawv poob ib txhij ntawm tib qhov siab. … Hauv huab cua, plaub thiab lub pob tsis poob ntawm tus nqi tib yam.
Vim li cas ob lub pob poob tib lub sijhawm?
Thaum koj tso lub pob (lossis txhua yam) nws ntog. Lub ntiajteb txawj nqus ua rau txhua yam poob ntawm tib lub nrawm. Qhov no yog vim li cas cov pob uas hnyav sib txawv ntaus hauv av tib lub sijhawm. Lub ntiajteb txawj nqus yog lub zog ua nyob rau hauv ib tug downward kev taw qhia, tab sis huab cua kuj ua nyob rau hauv ib tug upwards.
Ua 2 yam khoom poob tib tus nqi?
Lub acceleration ntawm cov khoom sib npaug ntawm gravitational acceleration. Qhov loj, qhov loj me, thiab cov duab ntawm cov khoom tsis yog qhov tseem ceeb hauv kev piav qhia qhov kev txav ntawm cov khoom. Yog li txhua yam khoom, tsis hais qhov loj los yog qhov hnyav, free poob nrog tib lub nrawm.
Vim li cas 2 khoom yuav poob tib tus nqi yog tias lawv yog tib pawg?
Acceleration of Falling Objects
khoom hnyav dua muaj lub zog gravitational ntau dua THIAB heavier yam khoom muaj qhov nrawm dua. Nws hloov tawm tias ob qhov cuam tshuam no raug tshem tawm kom ua rau cov khoom ntog muaj qhov nrawm tib yam tsis hais qhov loj.
Cov khoom hnyav dua puas poob sai dua cov khoom sib dua?
Tsis yog,Cov khoom hnyav dua poob nrawm(los yog qeeb) raws li cov khoom sib zog, yog tias peb tsis quav ntsej cov huab cua sib txhuam. Kev sib txhuam huab cua tuaj yeem ua qhov sib txawv, tab sis nyob rau hauv txoj kev nyuaj. Lub gravitational acceleration rau txhua yam khoom yog tib yam.
