Question

Автомобиль проехал 120 км за 2 часа и 100 км за 3 часа.Чему равна средняя путевая скорость?

Answer 1

V=(S1+S2)/(t1+t2)
V=(120+100)/(2+3)=220/5=44 км/ч

Answer 2

V=S/t
V=120/2=60(км/ч)
Ответ: 60 км/ч

Answer 3

Calculation of Average Speed

To calculate the average speed, we need to divide the total distance traveled by the total time taken. In this case, the car traveled 120 km in 2 hours and 100 km in 3 hours.

To find the average speed, we can use the formula:

Average Speed = Total Distance / Total Time

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

For the first part of the journey: - Distance = 120 km - Time = 2 hours

For the second part of the journey: - Distance = 100 km - Time = 3 hours

Now, let's calculate the average speed for each part of the journey:

Average Speed for the first part: - Distance = 120 km - Time = 2 hours - Average Speed = 120 km / 2 hours = 60 km/h

Average Speed for the second part: - Distance = 100 km - Time = 3 hours - Average Speed = 100 km / 3 hours ≈ 33.33 km/h

Conclusion

The average speed for the entire journey is the total distance divided by the total time taken. In this case, the car traveled 220 km in a total of 5 hours.

Average Speed for the entire journey: - Total Distance = 120 km + 100 km = 220 km - Total Time = 2 hours + 3 hours = 5 hours - Average Speed = 220 km / 5 hours = 44 km/h

Therefore, the average speed for the entire journey is approximately 44 km/h.