Question

Из города M в город N со скоростью 50 км/ч выехал перввый атомобиль , а через 1 час после этого навстречу ему из города N выехал со скоростью 90 км/ч второй автомобиль . Расстояние между городами M и N равно 610 км на каком расстоянии от города N автомобили встретятся

Answer 1

Ответ:

360 км

Пошаговое объяснение:

v1=50 км/ч   t1=1 ч   v2=90 км/ч  s=610 км   sx=?

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Уравнения движения:

x1=v1*(t1+t)

x2=s-v2*t

Время встречи:

x1=x2

t=(s-v1*t)/(v2+v1)=(610-50*1)/(90+50)=4 ч

sx=v2*t=90*4=360 км

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Answer 2

Ответ: 360км

Пошаговое объяснение:

Путь первого автомобиля за час равен:

S1=V1*t=50*1=50км

Расстояние между автомобилями в момент начала движения второго автомобиля равно:

S2=S-S1=610-50=560км

Скорость сближения автомобилей равна:

V=V1+V2=50+90=140км/ч

Время, которое автомобили затратят до встречи, равно:

t=S2/V=560/140=4ч

Расстояние от города N до места встречи автомобилей равно:

S3=V2*t=90*3=360км

Answer 3

Problem Analysis

We are given that two cars, the first car and the second car, are traveling from city M to city N. The first car has a speed of 50 km/h, and the second car has a speed of 90 km/h. The distance between city M and city N is 610 km. We need to find the distance from city N where the two cars will meet.

Solution

To find the distance from city N where the two cars will meet, we can use the formula:

Distance = Speed × Time

Let's assume that the two cars meet after t hours. The first car has been traveling for t hours at a speed of 50 km/h, so it has covered a distance of 50t km. The second car has been traveling for (t - 1) hours at a speed of 90 km/h, so it has covered a distance of 90(t - 1) km.

Since the total distance between city M and city N is 610 km, we can set up the following equation:

50t + 90(t - 1) = 610

Simplifying the equation:

50t + 90t - 90 = 610

140t = 700

t = 5

Therefore, the two cars will meet after 5 hours. To find the distance from city N where they will meet, we can substitute t = 5 into the equation for the second car's distance:

Distance = 90(t - 1) = 90(5 - 1) = 90 × 4 = 360 km

Therefore, the two cars will meet at a distance of 360 km from city N.

Answer

The two cars will meet at a distance of 360 km from city N.