Jbjrfafal2 Wczöe Wczöe ij fcmgal Jbjrfafal2 Aestruffalejs2 kjj
ijtjeaicmjetj kls jbjrfafals iceil rjspujstc c kcs prj`uetcs slkafatcics, kc slkufaöe ijgj aefkuar kc jxpkafcfaöe ijk prlfjsl pcsl plr pcsl ocstc kkj`cr ck rjsuktcil 3. Je uec kag kagrjrí rjríc c je kc Fauici ij Máx Máxafl afl,, fucei fuceil l jk prjfa prjfal l ij vjetc js ij $33> $3 3>.> .>> > sj vjei vjeije je 7> kagr kagrls ls,, pj pjrl rl ck ia iasm smae aeua uarr jk prjf prjfal al c $3 $3>> >> sj aefrjmjetc kc vjetc c :> kagrls, ¼fuãk js kc rczöe ij fcmgal prlmjial ij kcs vjetcs mjesuckjs fle rjspjftl ck prjfal< Flesaijrcrjmls Flesaijrcrjm ls ‛x” flml jk prjfal ij vjetc y ‛d(x)” flml kls kagrls quj sj vjeije mjesuckmjetj plr kl quj lgtjejmls ils fcsls2 Je jk pramjr fcsl2 ^crc jk sj`ueil fcsl2
x =33> 33> x + ∄ x =3>>
d ( ( x )= 7> d ( ( x + ∄ x )=:>
∄ x =3>> ∗33>=∗3>
Ck ijravcr lgtjejmls2 ∄ d ( ( x ) d (( x + ∄ x )∗d (( x ) = ∄x ∄x ∄ d ( ( x ) :> ∗7> = ∄x 3>> ∗33> 33> ∄ d ( ( x ) 6> = ∗ 3> ∄x ∄ d (( x ) =∗6 ∄x
Jstl qu Jstl quaj ajrj rj ij ijfa farr qu quj, j, ij ijbc bce e ij vjei vjeijr jrsj sj 6 kakagr grls ls pl plrr fcic fcic pj pjsl sl qu quj j sj aefrjmjetc jk prjfal. 7. Va sj kcezc uec pjk pjkltc ltc je dlrmc dlrmc vjrta vjrtafck fck ocf ocfac ac crra crragc gc fle uec vjklf vjklfaic aici i ij 7> m/s, jetlefjs su ckturc fle rjspjftl ck sujkl ijspuás ij t sj`ueils sj`ueils js 7 o ( t )=7> t ∗9.1 t mjtrls. Ijravcr o(t) ¼Fuãk js su vjklfaici ijspuás ij 3 sj`ueil< ^crc fckfukcr kc vjklfaici, scfcrjmls kc ijravcic ij kc duefaöe quj els crrlbc kc ckturc. io = 7> ∗ 9.1 t it
Ck sustatuar t=3 lgtjejmls2
v =7>∗ 9.1 ( 3 ) v =3>.7
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¼Fuãeil ckfcezc kc pjkltc uec vjklfaici ij : m/s< Va v=:
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¼Fuãk js kc ckturc mãxamc quj ckfcezc kc pjkltc< Bustadafcr quj sjc ue mãxaml, ijravcmls o(t) j a`uckcmls c > sj lgtajej mãxamls y míeamls. Kc ckturc mãxamc sj ckfcezc fuceil kc vjklfaici js fjrl io = 7> ∗ 1.? t > =7>∗ 1.? t t t =7.>9 m it
¼Fuãk js kc vjklfaici ij kc pjkltc fuceil jstã 37 mjtrls crragc ijk sujkl< Flml ijtjrmaecmls je kc prj`uetc cetjralr, jk puetl mãs cktl sj ckfcezc je 7>.9 mjtrls, kl quj sa`eadafc quj pcsc ils vjfjs plr kc ckturc ij 37 mjtrls, uec vjz fuceil vc sugajeil y uec vjz fuceil vc gcbceil. 7
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