Question

Один автомобиль, двигаясь равномерно со скоростью 12 м/с, в течение 10 с проехал такое же расстояние, что и другой за 15 с. Какова скорость второго автомобиля? с решением пожалуйста!

Answer 1

Problem Analysis

We are given that one car travels a certain distance in 10 seconds at a constant speed of 12 m/s, while another car travels the same distance in 15 seconds. We need to find the speed of the second car.

Solution

Let's assume that the distance traveled by both cars is d.

The formula to calculate speed is:

Speed = Distance / Time

For the first car: Speed of the first car = 12 m/s Time taken by the first car = 10 seconds

Using the formula, we can write:

12 = d / 10 Simplifying the equation, we get:

d = 12 * 10 = 120 meters

For the second car: Time taken by the second car = 15 seconds

Using the formula, we can write:

Speed of the second car = d / 15

Substituting the value of d from the first equation, we get:

Speed of the second car = 120 / 15 = 8 meters per second

Therefore, the speed of the second car is 8 m/s.

Answer

The speed of the second car is 8 m/s.