Question

Дельфин развивает скорость модуль которой =55км/ч, кит =40км/ч. На каком расстоянии находился кит от дельфина, если, плывя равномерно в одном направлении, дельфин догнал кита через промежуток времени = 20 мин.

Answer 1

V1 = 55 км/ч, 
v2 = 40 км/ч.
t = 20 Мин = 1/3 час
S = (v1- v2) / t = (55- 40) / 1/3 =15 *3 =45 км

Answer 2

Calculation of Distance between Dolphin and Whale

To calculate the distance between the dolphin and the whale, we can use the formula:

Distance = Speed x Time

Given that the dolphin's speed is 55 km/h and the whale's speed is 40 km/h, and the dolphin catches up to the whale in 20 minutes, we need to convert the time to hours.

20 minutes = 20/60 = 1/3 hour

Now we can calculate the distance using the formula:

Distance = Speed x Time

For the dolphin: Distance(dolphin) = 55 km/h x (1/3) hour

For the whale: Distance(whale) = 40 km/h x (1/3) hour

Let's calculate the distances:

Distance(dolphin) = 55 km/h x (1/3) hour = 55/3 km

Distance(whale) = 40 km/h x (1/3) hour = 40/3 km

Therefore, the distance between the dolphin and the whale, when the dolphin catches up to the whale after 20 minutes, is 55/3 km.