simonovaliubov5852
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Из пункта а выехал всадник со скоростью 12км/ч.одговременно с ним из пункта в находящегося на растоянии 24 км от пункта а вышел пешеход со сеоростью 4км/ч.они движутся в одном направлении.на каком расстоянии от пункта в всадник догонит пешехода?

Математика

Ответы

lubavarif83
1) 12-4 = 8 км/ч - разность в скорости.
2) 24 : 8 = 3 ч - через столько всадник догонит пешехода.
ответ: 3 ч.
karavan85450

Пошаговое объяснение:

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uvarovig

В решении.

Пошаговое объяснение:

Расстояние по трассе между двумя посёлками 1540 м. Из этих посёлков одновременно навстречу друг другу выехали два велосипедиста. Скорость первого равна 3 м/с, скорость второго 4 м/с. Какое расстояние будет между велосипедистами через 3 мин после начала движения? Через какое время после начала движения велосипедисты встретятся?

Формула движения: S=v*t

S - расстояние            v - скорость             t – время

3 минуты=60*3=180 секунд.

1)Найти расстояние 1 велосипедиста:

3*180=540 (м).

2)Найти расстояние 2 велосипедиста:

4*180=720 (м).

3)Какое расстояние будет между велосипедистами через 3 мин после начала движения?

1540 - (540+720)= 280 (м).

4)Через какое время после начала движения велосипедисты встретятся?

Общее расстояние 1540 м.

Общая скорость 3+4=7 (м/сек).

Общее время: 1540 : 7 = 220 (сек.)

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Из пункта а выехал всадник со скоростью 12км/ч.одговременно с ним из пункта в находящегося на растоянии 24 км от пункта а вышел пешеход со сеоростью 4км/ч.они движутся в одном направлении.на каком расстоянии от пункта в всадник догонит пешехода?
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