Video: Dab tsi yog qhov davhlau ya nyob twg tshaj tawm ntawm skydiver?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
txog 200 km / h
Cov lus nug tseem yog, dab tsi yog qhov nrawm nrawm hauv physics?
npe. Physics . tus nrawm Thaum lub cev ntog txav mus los ntawm qhov nruab nrab, zoo li huab cua, thaum lub zog ntawm qhov nruab nrab ntawm qhov sib npaug ntawm qhov loj thiab qhov sib txawv ntawm kev coj mus rau lub zog ntawm lub ntiajteb txawj nqus. qhov siab tshaj plaws nrawm ntawm lub cev poob los ntawm cov kua dej khov.
Tsis tas li ntawd, koj puas ncav cuag qhov nrawm nrawm thaum skydiving? Ntawm kwv yees li 120 mph, skydivers ncav cuag qhov nrawm nrawm thiab caij huab cua molecules uas xav tias ruaj khov li pw saum txaj. Ntau dua li qhov kev xav ntawm kev poob qis, ib tus neeg xav zoo li lawv ntab.
Dab tsi yog qhov dav hlau tshaj tawm ntawm lub dav hlau?
Yog li, cia peb hais tias koj yog skydiver dhia tawm ntawm ib qho lub dav hlau . Qhov ceev tshaj plaws uas koj yuav mus yog dab tsi? Cov terminal ceev ntawm ib tug skydiver nyob rau hauv ib tug dawb-poob txoj hauj lwm, qhov uas lawv ntog nrog lawv lub plab mus rau lub ntiaj teb yog hais txog 195 km / h (122 mph).
Cov qauv ntawm kev tshaj tawm yog dab tsi?
Velocity Formula . Cov nrawm yog lub sij hawm tus nqi hloov pauv. Yog tias 'S' yog qhov hloov chaw ntawm ib qho khoom hauv qee lub sijhawm 'T', ces qhov nrawm yog sib npaug, v = S/T. Cov units ntawm nrawm yog m/s los yog km/hr.
Pom zoo:
Dab tsi yog lub zog rub ntawm lub davhlau ya nyob twg?
Nws tshwm sim thaum qhov sib npaug ntawm lub zog rub (Fd) thiab qhov buoyancy sib npaug rau qhov downwardforce ntawm lub ntiajteb txawj nqus (FG) ua rau ntawm qhov khoom. Influid dynamics, ib yam khoom yog txav ntawm nws lub davhlau ya nyob twg tshaj tawm yog tias nws qhov ceev tsis tu ncua vim qhov txwv quab yuam los ntawm cov kua los ntawm qhov nws txav mus
Lub davhlau ya nyob twg tshaj tawm mus txog li cas?
Terminal tshaj tawm tau ua tiav, yog li ntawd, thaum qhov ceev ntawm cov khoom txav tsis tau nce lossis txo; cov khoom acceleration (los yog deceleration) yog xoom. Thaum lub davhlau ya nyob twg tshaj tawm, huab cua tsis kam sib npaug hauv qhov hnyav ntawm qhov khoom poob
Dab tsi yog qhov hluav taws xob davhlau ya nyob twg?
Lub davhlau ya nyob twg yog qhov taw tes uas tus neeg xyuas pib los ntawm cov khoom siv, cov khoom siv lossis lub network los txog qhov kawg. Hauv kev tsom xam network (hluav taws xob circuits), lub davhlau ya nyob twg txhais tau hais tias lub ntsiab lus ntawm kev sib txuas tuaj yeem ua rau lub network hauv txoj kev xav thiab tsis tas yuav xa mus rau ib qho khoom siv lub cev
Dab tsi yog qhov yuam kev loj tshaj plaws yog tias Irina ntsuas qhov ntev ntawm nws lub qhov rais li 3.35 feet qhov yuam kev loj tshaj plaws yog taw?
Kev daws: Qhov yuam kev loj tshaj plaws hauv kev ntsuas ntsuas tau txhais tias yog ib nrab ntawm qhov ntsuas ntsuas
Yuav ua li cas koj pom qhov nruab nrab tshaj tawm ntawm qhov tshaj tawm vs lub sijhawm teeb?
Qhov chaw nyob hauv qab qhov nrawm / lub sijhawm nkhaus yog tag nrho cov kev hloov pauv. Yog tias koj faib qhov ntawd los ntawm kev hloov pauv hauv lub sijhawm, koj yuav tau txais qhov nruab nrab tshaj tawm. Velocity yog vector daim ntawv ntawm kev ceev. Yog tias qhov nrawm ib txwm tsis yog qhov tsis zoo, ces qhov nruab nrab tshaj tawm thiab qhov nruab nrab ceev yog tib yam