Video: Lub kinetic zog formula yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov mis rau xam lub zog kinetic (KE) yog KE = 0.5 x mv2. Ntawm no m sawv rau pawg , qhov ntsuas ntawm qhov teeb meem ntau npaum li cas hauv ib qho khoom, thiab v sawv rau qhov nrawm ntawm qhov khoom, lossis tus nqi ntawm qhov khoom hloov nws txoj haujlwm.
Ua raws li qhov no saib, dab tsi yog kinetic zog mis nrog piv txwv?
Nyob rau hauv classical mechanics, kinetic zog (KE) yog sib npaug rau ib nrab ntawm cov khoom hnyav (1/2 * m) muab faib los ntawm qhov nrawm squared. Rau piv txwv Yog hais tias ib yam khoom uas hnyav ntawm 10 kg (m = 10 kg) txav ntawm qhov nrawm ntawm 5 meters ib ob (v = 5 m / s), kinetic zog yog sib npaug rau 125 Joules, los yog (1/2 * 10 kg) * 5 m / s2.
Ib sab saum toj, kinetic zog yog dab tsi? Nyob rau hauv physics, lub kinetic zog (KE) ntawm qhov khoom yog qhov zog uas nws muaj vim nws txoj kev txav. Nws yog txhais raws li kev ua haujlwm xav tau los ua kom lub cev ntawm ib qho khoom loj los ntawm so mus rau nws qhov kev tshaj tawm. Tau txais qhov no zog thaum nws acceleration, lub cev tswj qhov no kinetic zog tshwj tsis yog nws qhov nrawm hloov.
V sawv cev rau dab tsi hauv kinetic zog mis?
Teb: Qhov hnyav, m = 113 kg, thiab qhov nrawm, v = 0.5 m/s. Siv cov kinetic zog sib npaug . Teb: Cov kinetic zog rau lub tsheb nyob rau hauv motion yog Ek = 320,000 J = 32,000 kg m2/s2. Lub nrawm ntawm lub tsheb, v = 25 m/s.
SI unit ntawm kinetic zog yog dab tsi?
Kinetic zog yog zog muaj los ntawm ib yam khoom nyob rau hauv motion. Yog qhov loj muaj units kilogram thiab qhov ceev ntawm meters ib ob, lub kinetic zog muaj units kilo-meters squared ib ob squared. Kinetic zog feem ntau yog ntsuas hauv units ntawm Joules (J); ib joule yuav muab 1 kg m2 /s2.
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