Question

Автомобіль 3 км рухався зі швидкістю 40 км/год і потім ще 3 км- зі швидкістю 60 км/год.Яка середня швидкість руху автомобіля на цьому шляху?

Answer 1

Якщо шляхи рівні то сер.шв.=(60+40)/2=50Км/год

Answer 2

Calculation of Average Speed

To calculate the average speed of a car over a given distance, we need to divide the total distance traveled by the total time taken. In this case, the car traveled 3 km at a speed of 40 km/h and then another 3 km at a speed of 60 km/h.

Let's calculate the average speed step by step:

1. Calculate the time taken for the first part of the journey: - Distance: 3 km - Speed: 40 km/h - Time = Distance / Speed = 3 km / 40 km/h = 0.075 hours

2. Calculate the time taken for the second part of the journey: - Distance: 3 km - Speed: 60 km/h - Time = Distance / Speed = 3 km / 60 km/h = 0.05 hours

3. Calculate the total time taken for the entire journey: - Total time = Time for the first part + Time for the second part = 0.075 hours + 0.05 hours = 0.125 hours

4. Calculate the total distance traveled: - Total distance = Distance for the first part + Distance for the second part = 3 km + 3 km = 6 km

5. Calculate the average speed: - Average speed = Total distance / Total time = 6 km / 0.125 hours = 48 km/h

Therefore, the average speed of the car over this journey is 48 km/h.