Question

Мотоцикл за первые 4 часа проехал 120 км, а следующие 3 часа двигался со скоростью 60 км/ч. Определи среднюю скорость мотоцикла на всём пути. Ответ округли до целого числа.

Answer 1

Ответ:

Объяснение:

t₁ = 4 ч

S₁ = 120 км

t₂ = 3 ч

V₂ = 60 км/ч

Vcp - ?

============

S₂ = V₂t₂ = 60 * 3 = 180 км

Vcp = (S₁ + S₂) / (t₁ + t₂) = (120 + 180) / (4 + 3) ≈ 43 км/ч

Answer 2

Ответ:~ 43 км/ч

Объяснение:средняя скорость =весь путь поделеное на все время

1)60*3=180-растояние которое он прошол за3 ч со скоростью 60 км в ч

2)(120+180)/7=42,857142... это примерно 43 км в ч

Answer 3

Calculation of Average Speed

To calculate the average speed of the motorcycle for the entire journey, we need to find the total distance traveled and the total time taken.

The motorcycle traveled 120 km in the first 4 hours and then continued at a speed of 60 km/h for the next 3 hours.

Let's calculate the total distance traveled: - In the first 4 hours, the motorcycle traveled 120 km. - In the next 3 hours, the motorcycle traveled at a speed of 60 km/h, so the distance covered is 60 km/h * 3 h = 180 km.

Therefore, the total distance traveled is 120 km + 180 km = 300 km.

Now, let's calculate the total time taken: - In the first 4 hours, the motorcycle traveled 120 km. - In the next 3 hours, the motorcycle traveled at a speed of 60 km/h.

Therefore, the total time taken is 4 hours + 3 hours = 7 hours.

To find the average speed, we divide the total distance traveled by the total time taken: Average Speed = Total Distance / Total Time = 300 km / 7 hours.

Now, let's calculate the average speed and round it to the nearest whole number.

Average Speed = 300 km / 7 hours = 42.857 km/h (rounded to the nearest whole number is 43 km/h).

Therefore, the average speed of the motorcycle for the entire journey is 43 km/h.