Question

Прямим шоссе на зустріч один одному рухаються два автомобілі з швидкустю V1 - 54 км\год а V2 - 90 км\год. Визначити яка відстань між ними буде через 30 хв. після їх зустрічі.

Answer 1

V1=54км/ч

V2=90км/ч

t=30 мин.=1/2 часа

решение:

S=(V1+V2)*t

S=(54+90)/0.5=288 км

Answer 2

Problem Analysis

We have two cars moving towards each other on a straight highway. The first car is traveling at a speed of V1 = 54 km/h, and the second car is traveling at a speed of V2 = 90 km/h. We need to determine the distance between them after 30 minutes (0.5 hours) from the moment they meet.

Solution

To find the distance between the two cars after 30 minutes, we need to calculate the total distance traveled by both cars during this time.

Let's assume that the distance between the two cars at the beginning is D. As they move towards each other, the total distance between them will decrease by the sum of their speeds.

After 30 minutes, the first car will have traveled a distance of V1 * 0.5, and the second car will have traveled a distance of V2 * 0.5. The total distance traveled by both cars will be (V1 + V2) * 0.5.

To find the distance between the two cars after 30 minutes, we subtract the total distance traveled by both cars from the initial distance D.

Distance between the two cars after 30 minutes = D - (V1 + V2) * 0.5

Let's calculate the distance using the given speeds:

V1 = 54 km/h and V2 = 90 km/h.

Calculation

Substituting the given values into the formula:

Distance between the two cars after 30 minutes = D - (V1 + V2) * 0.5

Distance between the two cars after 30 minutes = D - (54 + 90) * 0.5

Distance between the two cars after 30 minutes = D - 72 * 0.5

Distance between the two cars after 30 minutes = D - 36

Therefore, the distance between the two cars after 30 minutes will be D - 36.

Unfortunately, the search results provided by You.com do not contain the necessary information to determine the initial distance between the two cars (D). Without this information, we cannot provide a specific numerical answer to the problem.

If you have any additional information or if there's anything else I can assist you with, please let me know!