Question

Мотоциклист проехал 100 км со скоростью 50км/ч и еще 120км со скоростью 40км/ч. Найдите среднюю скорость мотоциклиста на всем пути.

Answer 1

1) 100+120=2 20км -прохал мотоциклист
2) 50+40=90км/ч:2= 45км/час это его средняя скорость

Answer 2

Calculation of Average Speed

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

The motorcyclist traveled 100 km with a speed of 50 km/h and an additional 120 km with a speed of 40 km/h.

To find the total distance, we add the two distances together: 100 km + 120 km = 220 km.

To find the total time, we need to calculate the time taken for each segment of the journey and then add them together.

For the first segment, the motorcyclist traveled 100 km with a speed of 50 km/h. Using the formula time = distance / speed, we can calculate the time taken for the first segment: 100 km / 50 km/h = 2 hours.

For the second segment, the motorcyclist traveled 120 km with a speed of 40 km/h. Using the same formula, we can calculate the time taken for the second segment: 120 km / 40 km/h = 3 hours.

Adding the two times together, we get: 2 hours + 3 hours = 5 hours.

Now that we have the total distance (220 km) and the total time (5 hours), we can calculate the average speed using the formula average speed = total distance / total time.

Plugging in the values, we get: 220 km / 5 hours = 44 km/h.

Therefore, the average speed of the motorcyclist for the entire journey is 44 km/h.

Answer

The average speed of the motorcyclist for the entire journey is 44 km/h.