Video: Dab tsi rog ua rau lub skydiver thaum ntog ntawm lub dav hlau?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Lub physics qab skydiving muaj kev sib cuam tshuam ntawm lub ntiajteb txawj nqus thiab huab cua tsis kam. Thaum a skydiver dhia tawm ntawm ib dav hlau nws pib accelerating downwards, kom txog rau thaum nws mus txog lub davhlau ya nyob twg ceev. Qhov no yog qhov ceev uas tus cab los ntawm huab cua tsis kam raws nraim qhov sib npaug zog ntawm lub ntiajteb txawj nqus rub nws.
Hais txog qhov no, dab tsi rog ua rau cov khoom poob?
Ob tug zog acting ntawm khoom yog hnyav vim lub ntiajteb txawj nqus rub lub khoom mus rau lub ntiaj teb, thiab luag resisting no tsab ntawv tsa suab. Thaum lub khoom yog thawj zaug tso tawm, luag yog me me raws li tshaj tawm yog tsawg, yog li cov resultant zog yog down. Qhov no txhais tau tias khoom accelerates rau lub ntiaj teb.
Ib tug kuj yuav nug, yog vim li cas skydivers nthuav lawv txhais tes thiab txhais ceg? Vim tias huab cua tsis kam kuj nyob ntawm qhov zoo ntawm cov khoom (koj) thiab yog li los ntawm tucking hauv koj caj npab thiab ceg koj tuaj yeem ncav cuag qhov nrawm nrawm dua li yog tias koj caj npab thiab ceg yog kis mus tawm.
Kuj paub, cov rog twg ua rau lub skydiver uas ntog ntawm qhov nrawm nrawm?
Ntawm ' terminal ceev ', uas yog hais txog 200 km / h, huab cua tsis kam zog balances lub gravitational zog thiab cov parachutist nres accelerating thiab ntog tsis tu ncua ceev.
Dab tsi yog qhov acceleration ntawm skydiver ntog?
Nyob ze ntawm lub ntiaj teb, ib yam khoom dawb poob Hauv lub tshuab nqus tsev yuav nrawm ntawm kwv yees li 9.8 m / s2, ywj siab ntawm nws pawg. Nrog rau huab cua tsis kam ua rau cov khoom uas tau poob lawm, cov khoom yuav nws thiaj li ncav cuag qhov nrawm nrawm, uas nyob ib puag ncig 53 m / s (195 km / h lossis 122 mph) rau tib neeg. skydiver.
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