Question

От пристани отошел катер со скоростью 26 км в час и в 21 часов 15 минут и прибыл в пункт назначения пропал без остановок 78 км определите время отправления катер от пристани Из аэропорта в 15 часов 25 минут вылетел самолет Ту-154 со скоростью 850 километров в час до работы назначения пролетел без посадки 3400 километров вычислите время приземления самолета

Answer 1

1) Время движения катера равно = 78 /26 = 3 часа . Отсюда время отправления катера от пристани равно 21 ч 15 мин - 3 час = 18 ч 15 мин 
2) Время полета до аэропорта назначения равно = 3400 /850 = 4 час.
В аэропорт назначения самолет прибудет в  15час 25мин + 4 час = 19 час 25 мин

Answer 2

Calculation of Departure Time of the Boat

To calculate the departure time of the boat from the dock, we need to consider the distance traveled and the speed of the boat.

Given: - Speed of the boat: 26 km/h - Distance traveled without stops: 78 km - Arrival time at the destination: 21:15 (9:15 PM)

To find the departure time, we can use the formula:

Time = Distance / Speed

Let's calculate the time it took for the boat to travel 78 km:

Time = 78 km / 26 km/h

Calculating this, we find that the boat took approximately 3 hours to travel 78 km.

Now, we can subtract this time from the arrival time to find the departure time:

Departure time = Arrival time - Travel time

Departure time = 21:15 - 3 hours

Calculating this, we find that the departure time of the boat from the dock was approximately 18:15 (6:15 PM).

Calculation of Landing Time of the Plane

To calculate the landing time of the plane, we need to consider the distance traveled and the speed of the plane.

Given: - Speed of the plane: 850 km/h - Distance traveled without landing: 3400 km - Departure time from the airport: 15:25 (3:25 PM)

To find the landing time, we can use the formula:

Time = Distance / Speed

Let's calculate the time it took for the plane to travel 3400 km:

Time = 3400 km / 850 km/h

Calculating this, we find that the plane took approximately 4 hours to travel 3400 km.

Now, we can add this time to the departure time to find the landing time:

Landing time = Departure time + Travel time

Landing time = 15:25 + 4 hours

Calculating this, we find that the landing time of the plane was approximately 19:25 (7:25 PM).

Therefore, the plane landed at its destination at around 19:25 (7:25 PM).

Please note that the above calculations are based on the given information and assume that there were no delays or other factors affecting the travel time.