Question

Вычислить среднюю скорость мотоцикла, двигавшегося в течение 20 минут со скоростью 10 м/с, а следующие 24 км со скоростью, в два раза большей.

Answer 1

Ответ:

извиняюсь за грязь,тупанул при решении

Answer 2

Calculation of Average Speed

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

Given: - The motorcycle traveled for 20 minutes at a speed of 10 m/s. - The motorcycle then traveled for the next 24 km at a speed twice as fast as the initial speed.

Let's break down the calculation step by step:

1. Convert the time traveled in minutes to seconds: - 20 minutes = 20 * 60 seconds = 1200 seconds.

2. Calculate the distance traveled in the first 20 minutes: - Speed = 10 m/s - Time = 1200 seconds - Distance = Speed * Time = 10 m/s * 1200 s = 12000 meters.

3. Calculate the distance traveled in the next 24 km: - Speed = 2 * 10 m/s = 20 m/s - Distance = 24 km = 24,000 meters.

4. Calculate the total distance traveled: - Total Distance = Distance in the first 20 minutes + Distance in the next 24 km = 12000 meters + 24000 meters = 36000 meters.

5. Calculate the total time taken: - Total Time = Time in the first 20 minutes + Time for the next 24 km = 1200 seconds + (24000 meters / 20 m/s) = 1200 seconds + 1200 seconds = 2400 seconds.

6. Calculate the average speed: - Average Speed = Total Distance / Total Time = 36000 meters / 2400 seconds = 15 m/s.

Therefore, the average speed of the motorcycle is 15 m/s.