Question

2 машины одновременно выехали из двух городов в одном 2 машины одновременно выехали из двух городов в одном направлении сколько скорости машин были равны 90 километров в час 110 километров в час Как изменяется расстояние между машинами через 1 час через 2 часа через 5 часов

Answer 1

1) 110+90 = 200(км/ч) - общая скорость
2) 200*1 = 200(км) - изменится  на это расстояние через 1 час
3) 200*2 = 400(км) - изменится  на это расстояние через 2 часа
4)200*5=1000(км) - изменится  на это расстояние через 5 часов

Answer 2

Problem Analysis

Two cars are traveling simultaneously from two different cities in the same direction. The speeds of the cars are given as 90 kilometers per hour and 110 kilometers per hour. We need to determine how the distance between the cars changes after 1 hour, 2 hours, and 5 hours.

Solution

To determine how the distance between the cars changes over time, we can use the formula:

Distance = Speed x Time

Let's calculate the distances between the cars after 1 hour, 2 hours, and 5 hours.

1. After 1 hour: - Car 1: Distance = 90 km/h x 1 h = 90 km - Car 2: Distance = 110 km/h x 1 h = 110 km - The distance between the cars after 1 hour is 110 km - 90 km = 20 km.

2. After 2 hours: - Car 1: Distance = 90 km/h x 2 h = 180 km - Car 2: Distance = 110 km/h x 2 h = 220 km - The distance between the cars after 2 hours is 220 km - 180 km = 40 km.

3. After 5 hours: - Car 1: Distance = 90 km/h x 5 h = 450 km - Car 2: Distance = 110 km/h x 5 h = 550 km - The distance between the cars after 5 hours is 550 km - 450 km = 100 km.

Therefore, the distance between the cars changes to 20 km after 1 hour, 40 km after 2 hours, and 100 km after 5 hours.

Answer

The distance between the two cars changes as follows: - After 1 hour: 20 km - After 2 hours: 40 km - After 5 hours: 100 km