Question

Из двух пунктов,расстояние между которыми 7 км 500 м,одновременно в одном направлении вышел пешеход со скоростью 6 км/ч и выехал автобус.Определите скорость автобуса,если он догнал пешехода через 15 мин. 5 класс.Буду очень благодарна,если вы решите,плиииииииииииииииииииииииз:3

Answer 1

15 минут - 0,25 часов  1) 6*0,25=1,5 (расстояние, которое прошёл пешеход за 15 минут) 2) 7,5+1,5=9 км (расстояние, которое нужно проехать автобусу, что бы догнать пешехода) 3) 9:0,25=36км/ч ( скорость автобуса) 

Answer 2

Problem Analysis

We are given that the distance between two points is 7 km 500 m. A pedestrian starts walking from one point at a speed of 6 km/h, and at the same time, a bus starts from the same point and catches up with the pedestrian after 15 minutes. We need to determine the speed of the bus.

Solution

Let's break down the problem step by step:

1. Convert the distance between the two points to a single unit. Since the speed of the pedestrian is given in km/h, it would be convenient to convert the distance to kilometers. 7 km 500 m is equal to 7.5 km.

2. Convert the time given in minutes to hours. 15 minutes is equal to 0.25 hours.

3. Use the formula: speed = distance / time to calculate the speed of the bus.

Let's calculate the speed of the bus using the given information:

1. Distance between the two points: 7.5 km. 2. Time taken by the bus to catch up with the pedestrian: 0.25 hours.

Using the formula speed = distance / time, we can calculate the speed of the bus:

speed = 7.5 km / 0.25 hours = 30 km/h.

Therefore, the speed of the bus is 30 km/h.

Answer

The speed of the bus is 30 km/h.