Question

Помогите прошу!!!!!!!!!Турист шел 3,8часа со скоростью 1,2м/с,а затем 2,2 часа со скоростью 0,9 м/с.Какова средняя скорость движения туриста на всем пути?

Answer 1

1,2м/с=4,32км/ч
0,9м/с=3,24км/ч
3,8*4,32=16,416км
2,2*3,24=7,128км
3,8+2,2=6часов был в пути
16,416+7,128=23,544км прошел турист за все время
23,544:6=3,934км/ч средняя скорость туриста на всем пути

Answer 2

Calculation of Average Speed

To calculate the average speed of the tourist, we need to find the total distance traveled and the total time taken.

The tourist walked for 3.8 hours at a speed of 1.2 m/s and then walked for 2.2 hours at a speed of 0.9 m/s.

To find the total distance traveled, we can add the distances covered during each segment of the journey.

The distance covered during the first segment can be calculated by multiplying the speed (1.2 m/s) by the time (3.8 hours):

Distance 1 = Speed 1 * Time 1 = 1.2 m/s * 3.8 hours

Similarly, the distance covered during the second segment can be calculated by multiplying the speed (0.9 m/s) by the time (2.2 hours):

Distance 2 = Speed 2 * Time 2 = 0.9 m/s * 2.2 hours

To find the total distance, we can add the distances covered during each segment:

Total Distance = Distance 1 + Distance 2

To find the total time taken, we can add the times taken during each segment:

Total Time = Time 1 + Time 2

Finally, we can calculate the average speed by dividing the total distance by the total time:

Average Speed = Total Distance / Total Time

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

Distance 1 = 1.2 m/s * 3.8 hours = 4.56 meters Distance 2 = 0.9 m/s * 2.2 hours = 1.98 meters Total Distance = 4.56 meters + 1.98 meters = 6.54 meters Total Time = 3.8 hours + 2.2 hours = 6 hours Average Speed = 6.54 meters / 6 hours

Therefore, the average speed of the tourist on the entire journey is approximately 1.09 meters per hour.

Please note that the calculations provided are based on the given information and assumptions.