Question

Два теплохода одновременно отошли от пристани в противоположных направлениях.Один теплоход прошёл за час 40 км, другой- 38 км. Найди скорость теплоходов.На каком расстоянии друг от друга находились теплоходы через час? Заполни таблицу в тетради . таблица: Время движения 1 ч, 2 ч ,3 ч ,4 ч . Расстояние между теплоходами - , , , .

Answer 1

Т.к. теплоходы прошли час, а скорость измеряетс я в км/ч, то следовательно их путь равен скорости.
Скорость первого=40км.ч
Скорость второго=38км.ч
Расстояние между ними через час=38+40=78 км
1час-78км
2час-156км
3час-312км
4час-624км

Answer 2

Problem Analysis

We are given two boats that depart from a dock simultaneously in opposite directions. The first boat travels a distance of 40 km in 1 hour, while the second boat travels a distance of 38 km in 1 hour. We need to find the speed of each boat and the distance between them after 1 hour.

Boat Speed Calculation

To find the speed of each boat, we can use the formula: speed = distance / time. Let's calculate the speed of each boat:

- Speed of the first boat = 40 km / 1 hour = 40 km/h. - Speed of the second boat = 38 km / 1 hour = 38 km/h.

Distance Calculation

To find the distance between the two boats after 1 hour, we can add up the distances traveled by each boat. Since they are moving in opposite directions, we can simply add the distances:

- Distance between the two boats after 1 hour = 40 km + 38 km = 78 km.

Table

Based on the given information, we can fill in the table in your notebook as follows:

| Time (hours) | Distance between the boats (km) | |--------------|---------------------------------| | 1 | 78 | | 2 | | | 3 | | | 4 | |

Please note that the distances between the boats for hours 2, 3, and 4 are not provided in the given information.