Question

Автомобиль за первые 0,5ч. проехал 36 км, а следующие 0,5ч. двигался со скоростью 25м\с. Какова средняя путевая скорость автомобиля на всем пути?

Answer 1

V_ср = s/t
s = s_1+s_2
t = t_1+t_2
s_2 = v_2*t_2
V_ср = (s_1+v_2*t_2)/t_1+t_2

Answer 2

Calculation of Average Speed

To calculate the average speed of the car over the entire journey, we need to consider the distance traveled and the time taken.

The car traveled 36 km in the first 0.5 hours and then continued at a speed of 25 m/s for the next 0.5 hours.

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

Average Speed = Total Distance / Total Time

Let's calculate the average speed step by step:

1. Convert the speed from m/s to km/h: - 25 m/s = 25 * 3.6 km/h = 90 km/h

2. Calculate the total distance: - The car traveled 36 km in the first 0.5 hours. - The car traveled at a speed of 90 km/h for the next 0.5 hours. - Total distance = 36 km + 90 km = 126 km

3. Calculate the total time: - The car traveled for 0.5 hours in the first part of the journey. - The car traveled for 0.5 hours in the second part of the journey. - Total time = 0.5 hours + 0.5 hours = 1 hour

4. Calculate the average speed: - Average Speed = Total Distance / Total Time - Average Speed = 126 km / 1 hour = 126 km/h

Therefore, the average speed of the car over the entire journey is 126 km/h.

Please note that the calculations are based on the information provided and may vary depending on the specific context of the problem.