Question

Из одного населенного пункта в другой мотоциклист двигался со скоростью v1=60 км/ч обратный путь он проехал со скоростью v2=15м/с какая средняя скорость мотоциклиста за все время движения

Answer 1

V1 = 60 км/часV2 = 10 м/сек = 36 км/часВремя пути вперед t1 = S/V1Время пути обратно t2 = S/V2Общее время t = t1+t2 = S/V1+ S/V2 = S(1/V1+1/V2)Средняя скорость V = 2S/t =2S/[S(1/V1+1/V2)]=2V1*V2/(V1+V2)=2*60*36/96= 45 км/час

Answer 2

Calculation of Average Speed

To calculate the average speed of the motorcyclist for the entire journey, we need to find the total distance traveled and the total time taken.

Let's denote: - v1 as the speed of the motorcyclist in the forward direction (60 km/h) - v2 as the speed of the motorcyclist in the backward direction (15 m/s)

To find the total distance traveled, we need to determine the distance covered in each direction and then add them together.

The distance covered in the forward direction can be calculated using the formula: distance = speed × time.

Let's assume the time taken in the forward direction is t1.

The distance covered in the forward direction is given by: distance_forward = v1 × t1.

Similarly, the distance covered in the backward direction can be calculated using the formula: distance = speed × time.

Let's assume the time taken in the backward direction is t2.

The distance covered in the backward direction is given by: distance_backward = v2 × t2.

To find the total distance traveled, we add the distances covered in both directions: total_distance = distance_forward + distance_backward.

Now, to find the total time taken, we add the times taken in both directions: total_time = t1 + t2.

Finally, we can calculate the average speed using the formula: average_speed = total_distance / total_time.

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

Calculation:

Given: - v1 = 60 km/h - v2 = 15 m/s

From the given information, we can see that the speeds are given in different units (km/h and m/s). To calculate the average speed, we need to convert the units to be consistent.

Converting v1 from km/h to m/s: 1 km/h = 1000 m / 3600 s (conversion factor) v1 = 60 km/h × (1000 m / 3600 s) = 16.67 m/s

Now we have v1 = 16.67 m/s and v2 = 15 m/s.

Let's assume the time taken in the forward direction is t1 and the time taken in the backward direction is t2.

To find the total distance traveled, we need to calculate the distances covered in both directions.

Using the formula distance = speed × time, we can calculate the distance covered in the forward direction: distance_forward = v1 × t1

Using the formula distance = speed × time, we can calculate the distance covered in the backward direction: distance_backward = v2 × t2

The total distance traveled is the sum of the distances covered in both directions: total_distance = distance_forward + distance_backward

The total time taken is the sum of the times taken in both directions: total_time = t1 + t2

Finally, we can calculate the average speed using the formula: average_speed = total_distance / total_time

Let's calculate the average speed.

Solution:

Given: - v1 = 16.67 m/s - v2 = 15 m/s

Let's assume the time taken in the forward direction is t1 and the time taken in the backward direction is t2.

Using the given information, we can calculate the average speed as follows:

1. Convert v1 from m/s to km/h: v1 = 16.67 m/s × (3600 s / 1000 m) = 60 km/h

2. Calculate the distance covered in the forward direction: distance_forward = v1 × t1

3. Calculate the distance covered in the backward direction: distance_backward = v2 × t2

4. Calculate the total distance traveled: total_distance = distance_forward + distance_backward

5. Calculate the total time taken: total_time = t1 + t2

6. Calculate the average speed: average_speed = total_distance / total_time

Now, let's calculate the average speed using the given values.

Calculation:

Given: - v1 = 60 km/h - v2 = 15 m/s

1. Convert v1 from km/h to m/s: v1 = 60 km/h × (1000 m / 3600 s) = 16.67 m/s

2. Let's assume the time taken in the forward direction is t1 and the time taken in the backward direction is t2.

3. Calculate the distance covered in the forward direction: distance_forward = v1 × t1

4. Calculate the distance covered in the backward direction: distance_backward = v2 × t2

5. Calculate the total distance traveled: total_distance = distance_forward + distance_backward

6. Calculate the total time taken: total_time = t1 + t2

7. Calculate the average speed: average_speed = total_distance / total_time

Unfortunately, the exact values of t1 and t2 are not provided in the question. Without these values, we cannot calculate the average speed. Please provide the values of t1 and t2 so that we can calculate the average speed accurately.