Treść zadania

E_lzunia

PROSZĘ POMÓŻCIE !
Pociąg towarowy jedzie przez most l=800m ze stała prędkością v=18km/h. Od chwili wjechania parowozu na most do chwili zjechania z tego mostu mostatniego wagonu upłynął czas t=6 minut 40 sekund. Obilicz ilość wagonów tego pociągu łącznie z lokomotywą, jeżeli wiadomo, że każdy wagon oraz lokomotywa mają długość s=20m

Zadanie jest zamknięte. Autor zadania wybrał już najlepsze rozwiązanie lub straciło ono ważność.

Najlepsze rozwiązanie

  • 0 0

    v=18km/h=18 000m/3600s=5m/s
    t=6min40s=400s
    s=v*t
    s=5m/s*400s=2000m
    długość pociągu wynosi :
    2000m-800m=1200m
    ilość wagonów +lokomotywa
    1200m : 20m=60
    odp.lokomotywa + 59 wagonów

Rozwiązania

Podobne materiały

Przydatność 65% The person I admired most.

The person I admire most is John Paul II. He is pope from the 16th of October 1978. I like him very much although he is old his mind is clear. He had difficult live and he had many complicated operations. He of average height, and he is of medium build. He has got very short grey hairs His face is oval and forehead high. He has got long eyebrows. He has got small, brown eyes and flat, small...

Przydatność 100% Most Interesting games

J and my friends interest the games of types first person (FPP). We things that most interesting game on this type there is Counter strike version 1.5 . In the game occures group terrorist and group counter terrorist which they must roll fight on appointed map. Counter strike there is internet game but it is possible to play for computers no along internet, but there is it pleasure on short...

Przydatność 100% My most terrific night

I loved in a small village in the coutry. It`s an old house, about 100 years old. I lived there with my parents and a little sister. My city friends often stayed with me but that horrible night I was alone at home, because my all family went to vi sit my ill aunt. ( She`s not realized that cigarettes are the main cause of lung cancer which kills houndred of thousands of people every year)....

Przydatność 75% Person I admire the most

The person I admire the most is Jan Paweł II his real name Karol Wojtyła. When He was young He lived in Wadowice where He was born, next He moved to Cracow where he was studying at Jagielonski University next in October 1979 he went to Vatican and there he was selected pope on 16th of October 1978. He was one of the most important people all over the world. During the second world war He...

Przydatność 100% My the most incredible day

My the most incredible day in my holidays was when I was in Jastarnia. In Jastarnia I was for a camp, but I live there with my paents. I swam there on windsurfing. When in the second week come end the wind pusch me near to Gdynia. But I couldn't come back to Jastarnia, because the wind was opposite. So I must swim with sail and board. There was very deep water, very cold and I was very...

0 odpowiada - 0 ogląda - 1 rozwiązań

Dodaj zadanie

Zobacz więcej opcji