Question

Первую половину времени своего движения автомобиль двигался со скоростью V1=80 км/час, а вторую половину времени-со скоростью V2=40км/час. Какова средняя скорость движения автомобиля?

Answer 1

S1=t/2xv1 S2=t/2xv2 Средняя скорость=1/2x(v1+v2)=60 км/ч))кому помог ставьте Лайк!всем удачи

Answer 2

Calculation of Average Speed

To calculate the average speed of the car, we can use the formula:

Average Speed = Total Distance / Total Time

In this case, we are given that the car traveled the first half of the time at a speed of V1 = 80 km/h and the second half of the time at a speed of V2 = 40 km/h.

Let's assume that the total time of the journey is T hours. Therefore, the first half of the time would be T/2 hours, and the second half of the time would also be T/2 hours.

To find the total distance traveled, we need to calculate the distance traveled in the first half of the time and add it to the distance traveled in the second half of the time.

The distance traveled in the first half of the time can be calculated using the formula:

Distance1 = Speed1 * Time1

where Speed1 = V1 and Time1 = T/2.

Similarly, the distance traveled in the second half of the time can be calculated using the formula:

Distance2 = Speed2 * Time2

where Speed2 = V2 and Time2 = T/2.

Finally, we can calculate the total distance traveled by adding Distance1 and Distance2.

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

V1 = 80 km/h (speed in the first half of the time)

V2 = 40 km/h (speed in the second half of the time)

T = Total Time

Distance1 = V1 * (T/2)

Distance2 = V2 * (T/2)

Total Distance = Distance1 + Distance2

Average Speed = Total Distance / Total Time

Now, let's calculate the average speed.