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Uploaded: 19.12.2015
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Avtomobil i velosipedist dvizhutsia navstrechu drug drugu so skorostiami sootvetstvenno 20 i 5 m/s. Rasstoianie mezhdu nimi v nachalnyi moment vremeni ravno 250 m. Napisat uravneniia dvizheniia tel i postroit grafiki zavisimosti x = x(t). Sistemu otscheta sviazat s zemlei. Schitat, chto polozhenie avtomobilia pri t = 0 sovpadaet s nachalom otscheta, a os X napravlena v tu zhe storonu, chto i skorost dvizheniia avtomobilia. Graficheski i analiticheski opredelit: <br /> <b>a)</b> mesto i vremia ikh vstrechi; <br /> <b>b)</b> kto iz nikh ranshe proidet sotyi metr i na skolko ranshe; <br /> <b>v)</b> rasstoianie mezhdu nimi cherez 5 s; <br /> <b>g)</b> gde nakhodilsia avtomobil v tot moment, kogda velosipedist prokhodil tochku s koordinatoi 225 m; <br /> <b>d)</b> kogda velosipedist prokhodil tochku, v kotoroi avtomobil byl cherez 7,5 s posle nachala dvizheniia; <br /> <b>e)</b> v kakie momenty vremeni rasstoianie mezhdu nimi bylo 125 m; <br /> <b>zh)</b> kakuiu tochku avtomobil proshel ranshe velosipedista na 12,5 s

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