Question

Из одного города одновременно в противоположных направлениях выехали автобус и легковая машина. Автобус ехал со скоростью 50 км/ч, а машина - 80 км/ч. Найди скорость удаления автобуса и машины. На сколько км автобус и машина удалятся друг от друга за 3 ч?

Answer 1

1)50+80=130(км/ч) - скорость удаления автобуса и машины за час.
2)130*3=390(км) - расстояние между автобусом и машиной через 3 часа.

Answer 2

50на3+80на3 =390 на таком расстоянии они

Answer 3

Problem Analysis

We are given that a bus and a car start from the same city in opposite directions. The bus is traveling at a speed of 50 km/h, and the car is traveling at a speed of 80 km/h. We need to find the relative speed of the bus and the car and the distance between them after 3 hours.

Relative Speed

The relative speed of two objects moving in opposite directions is the sum of their individual speeds. In this case, the relative speed of the bus and the car is the sum of their speeds, which is 50 km/h + 80 km/h = 130 km/h.

Distance Traveled

To find the distance traveled by the bus and the car after 3 hours, we can use the formula: distance = speed * time. For the bus, the distance traveled is 50 km/h * 3 hours = 150 km. For the car, the distance traveled is 80 km/h * 3 hours = 240 km.

Distance between the Bus and the Car

Since the bus and the car are moving in opposite directions, the distance between them is the sum of the distances traveled by each vehicle. Therefore, the distance between the bus and the car after 3 hours is 150 km + 240 km = 390 km.

Answer

The relative speed of the bus and the car is 130 km/h. The distance between the bus and the car after 3 hours is 390 km.