Video: Puas yog acceleration zoo lossis tsis zoo nce?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Txhua yam khoom cuam tshuam los ntawm lub ntiajteb txawj nqus (ib qhov projectile lossis ib qho khoom hauv lub caij nplooj zeeg dawb) muaj qhov kev ceev -9.81 m/s2, tsis hais txog kev taw qhia. Cov kev ceev yog tsis zoo thaum nce mus vim qhov ceev yog txo. Yog tias qhov sib npaug muaj g hauv nws, zoo li W = mg, kev taw qhia yog implied thiab cov kev ceev yog zoo.
Tsuas yog li ntawd, puas zoo acceleration txhais tau tias ceev?
Yog hais tias ib yam khoom yog qeeb, ces nws kev ceev yog nyob rau hauv qhov opposite direction ntawm nws cov lus tsa suab. Hauv Piv txwv A, qhov khoom txav mus rau hauv qhov zoo direction (ie, muaj a zoo velocity) thiab ua kom ceev . Thaum ib yam khoom yog ua kom ceev , cov kev ceev yog nyob rau hauv tib txoj kev raws li qhov tshaj tawm.
Ib yam li ntawd, qhov acceleration zoo txhais li cas? Ib qho kev nce hauv qhov loj ntawm qhov nrawm ntawm lub cev txav (qhov nce hauv qhov nrawm) yog hu ua a zoo acceleration ; qhov txo qis hauv kev ceev yog hu ua qhov tsis zoo kev ceev . Kev nrawm , zoo li tshaj tawm, yog vector kom muaj nuj nqis, yog li txhua qhov kev hloov pauv ntawm lub cev txav mus los kuj yog ib qho kev ceev.
Kuj paub yog, yog acceleration zoo los yog tsis zoo nyob rau hauv qhov projectile motion?
Yog tias koj txiav txim siab "up" yog zoo , tiam kev ceev yog ib txwm tsis zoo (vim nws taw tes rau qhov uas feem ntau yog lub ntiaj teb hauv cov no projectile zog teeb meem). Yog tias projectile yog nce mus, qhov nrawm yog zoo ; yog tias nws txav mus rau hauv qab, qhov nrawm yog tsis zoo.
Dab tsi yog lub cim ntawm acceleration?
Kev nrawm . Hauv Physics lossis Physics Science, kev ceev ( cim : a) txhais tau tias yog tus nqi hloov pauv (lossis derivative nrog rau lub sijhawm) ntawm kev tshaj tawm. Nws yog li no vector kom muaj nuj nqis nrog qhov ntev / sijhawm².
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