Question

Велосипедист и мотоциклист выехали одновременно навстречу друг другу из двух поселков. Велосипедист ехал со средней скоростью 12 км/ч , а мотоциклист - 40 км/ч. 1) Найди среднюю скорость сближения. 2) На сколько километров велосипедист и мотоциклист приблизиться друг другу за 2 часа?

Answer 1

1.1)средняя скорость сближения равна 12+40=52км/ч.2) за 2 часа они приблизится на расстоянии 2*52=104км.

Answer 2

Calculation of Average Closing Speed

To find the average closing speed between the cyclist and the motorcyclist, we need to calculate the sum of their individual speeds. The cyclist's speed is given as 12 km/h, and the motorcyclist's speed is given as 40 km/h.

The formula to calculate the average closing speed is:

Average Closing Speed = (Speed of Cyclist + Speed of Motorcyclist) / 2

Substituting the given values:

Average Closing Speed = (12 km/h + 40 km/h) / 2

Calculating the average closing speed:

Average Closing Speed = 52 km/h.

Calculation of Distance Covered in 2 Hours

To determine how close the cyclist and the motorcyclist will get to each other in 2 hours, we need to calculate the distance each of them will cover in that time.

The formula to calculate distance is:

Distance = Speed × Time

For the cyclist: Distance covered by the cyclist = Speed of Cyclist × Time Distance covered by the cyclist = 12 km/h × 2 hours

For the motorcyclist: Distance covered by the motorcyclist = Speed of Motorcyclist × Time Distance covered by the motorcyclist = 40 km/h × 2 hours

Calculating the distances covered by each:

Distance covered by the cyclist = 12 km/h × 2 hours = 24 km Distance covered by the motorcyclist = 40 km/h × 2 hours = 80 km

To find how close they will get to each other, we need to subtract the distance covered by the cyclist from the distance covered by the motorcyclist:

Distance = Distance covered by the motorcyclist - Distance covered by the cyclist Distance = 80 km - 24 km

Calculating the distance:

Distance = 56 km.

Therefore, the cyclist and the motorcyclist will get approximately 56 kilometers closer to each other in 2 hours.