Предмет: Физика, автор: прое8це9

Дано: S1=1,5 км
t1=2,5 мин
S2=5 км
t2=5 мин
Найти: Среднюю V-?

Ответы

Автор ответа: sonya5995

s1=1,5км=1500м                              решение
t1=2,5мин=150с                             vср=s:t
s2=5км=5000                                 s=s1+s2
t2=5мин=300с                                t=t1+t2
vср-?                                             s=1500м+5000м=6500м
                                                     t=150c+300c=450c
                                                     vср=6500м:450с=14,44м/с

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