Question

Мне только ДАНО: теплоход на подводных крыльях за первые 2 часа проплыл 160 км а следующие 3 часа двигался со скоростью 60 км в час.какова средняя скорость движения

Answer 1

Calculation of Average Speed

To calculate the average speed of the boat, we need to find the total distance traveled and the total time taken.

In the given scenario, the boat traveled 160 km in the first 2 hours and then continued to move at a speed of 60 km/h for the next 3 hours.

Let's calculate the total distance traveled and the total time taken:

- Distance traveled in the first 2 hours: 160 km - Distance traveled in the next 3 hours: 60 km/h * 3 h = 180 km

The total distance traveled is 160 km + 180 km = 340 km.

The total time taken is 2 hours + 3 hours = 5 hours.

To find the average speed, we divide the total distance traveled by the total time taken:

Average speed = Total distance / Total time = 340 km / 5 hours = 68 km/h.

Therefore, the average speed of the boat during the entire journey is 68 km/h.