Question

першу третину шляху автомобіль пройшов із постійною швидкістю 50 км/год, а шлях, що залишився,- з постійною швидкістю 60 км/год. З якою середньою швидкістю рухався автомобіль?​

Answer 1

Ответ:60км/г

Объяснение:Vcep= S+S

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S+S

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Answer 2

Calculation of Average Speed

To calculate the average speed of the car, we need to consider the distances traveled at each speed and the time taken for each segment.

Let's assume that the total distance traveled is D km.

The car traveled the first one-third of the distance at a constant speed of 50 km/h. This means it covered (1/3) * D km at 50 km/h.

The remaining distance, which is two-thirds of the total distance, was covered at a constant speed of 60 km/h. This means it covered (2/3) * D km at 60 km/h.

To calculate the average speed, we need to find the total time taken for the entire journey. We can use the formula:

Average Speed = Total Distance / Total Time

The total time can be calculated by dividing the total distance by the sum of the times taken at each speed.

Let's calculate the average speed step by step:

1. Distance covered at 50 km/h: (1/3) * D km 2. Time taken at 50 km/h: Distance / Speed = (1/3) * D / 50 hours 3. Distance covered at 60 km/h: (2/3) * D km 4. Time taken at 60 km/h: Distance / Speed = (2/3) * D / 60 hours

Now, we can calculate the total time taken for the journey:

Total Time = Time taken at 50 km/h + Time taken at 60 km/h

Finally, we can calculate the average speed:

Average Speed = Total Distance / Total Time

Let's calculate the average speed using the given information:

1. Distance covered at 50 km/h: (1/3) * D km 2. Time taken at 50 km/h: (1/3) * D / 50 hours 3. Distance covered at 60 km/h: (2/3) * D km 4. Time taken at 60 km/h: (2/3) * D / 60 hours 5. Total Time = (1/3) * D / 50 + (2/3) * D / 60 hours 6. Average Speed = D / [(1/3) * D / 50 + (2/3) * D / 60] km/h

Simplifying the equation:

Average Speed = 2 * 50 * 60 / (50 + 40) km/h

Now, let's calculate the average speed:

Average Speed = 6000 / 90 km/h

Therefore, the car traveled with an average speed of 66.67 km/h.