Question

Мотоциклист проехал 600 км со скоростью 120 км/ч, затем 540 км со скоростью 90 км/ч и 140 км со скоростью 70 км/ч. найди среднюю скорость велосипедиста на протяжении всего пути.

Answer 1

Ответ:

120+90+70:3=93;3333333

Answer 2

Calculating the Average Speed of the Motorcyclist

To find the average speed of the motorcyclist over the entire journey, we can use the formula:

Average Speed = Total Distance / Total Time

Let's calculate the average speed step by step using the given information.

1. Calculating Total Time: - Time taken to cover the first 600 km at 120 km/h: - Time = Distance / Speed = 600 km / 120 km/h = 5 hours - Time taken to cover the next 540 km at 90 km/h: - Time = Distance / Speed = 540 km / 90 km/h = 6 hours - Time taken to cover the final 140 km at 70 km/h: - Time = Distance / Speed = 140 km / 70 km/h = 2 hours

Total Time = 5 hours + 6 hours + 2 hours = 13 hours

2. Calculating Total Distance: Total Distance = 600 km + 540 km + 140 km = 1280 km

3. Calculating Average Speed: Average Speed = Total Distance / Total Time Average Speed = 1280 km / 13 hours = 98.46 km/h

Therefore, the average speed of the motorcyclist over the entire journey is 98.46 km/h.