Question

Автомобіль їхав 3 год зі швидкістю 62,6 км за годину і 2 години зі швидкістю 65 км за годину . Знайдіть середню швидкість автомобіля на всьому шляху.

Answer 1

3*62,6=187,8 км проїхав за 3 години
2*65=130 км проїхав за 2 години
187,8+130=317,8 км весь шлях
3+2=5 год на весь шлях
317,8:5=63,56 км/год середня швидкість
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Answer 2

Calculation of Average Speed

To find the average speed of the car for the entire journey, we can use the formula:

Average Speed = Total Distance / Total Time

In this case, the car traveled for 3 hours at a speed of 62.6 km/h and for 2 hours at a speed of 65 km/h.

Let's calculate the total distance and total time:

- Distance traveled at 62.6 km/h for 3 hours: 62.6 km/h * 3 hours = 187.8 km - Distance traveled at 65 km/h for 2 hours: 65 km/h * 2 hours = 130 km

The total distance is the sum of these two distances: 187.8 km + 130 km = 317.8 km

The total time is the sum of the times: 3 hours + 2 hours = 5 hours

Now, we can calculate the average speed:

Average Speed = Total Distance / Total Time = 317.8 km / 5 hours = 63.56 km/h

Therefore, the average speed of the car for the entire journey is approximately 63.56 km/h.