Question

труст, направляясь к станции, первые 2ч шёл по ровной дороге со скоростью a км\ч, затем полчаса поднимался в гору со скоростью b км\ч. на горе его догнала машина и за 15 миндовезла до станции, причём скорость движения машины v км\ч.написать формулу пути (s), который преодолел турист.

Answer 1

S = 2 * a + 0,5 * b + 0,25 * v

Ответ: 2 * a + 0,5 * b + 0,25 * v

Answer 2

Problem Analysis

The problem states that a tourist walks for the first 2 hours on a flat road at a speed of 'a' km/h. Then, the tourist walks uphill for half an hour at a speed of 'b' km/h. The tourist is then caught by a car and reaches the station in 15 minutes. The speed of the car is 'v' km/h. We need to find the formula for the distance (s) traveled by the tourist.

Solution

To find the formula for the distance traveled by the tourist, we need to break down the problem into different segments and calculate the distance traveled in each segment.

1. Distance traveled on the flat road: - The tourist walks for 2 hours on a flat road at a speed of 'a' km/h. - The formula for distance is given by: distance = speed × time. - Therefore, the distance traveled on the flat road is: distance_flat = a × 2.

2. Distance traveled uphill: - The tourist walks uphill for half an hour at a speed of 'b' km/h. - The formula for distance is given by: distance = speed × time. - Therefore, the distance traveled uphill is: distance_uphill = b × 0.5.

3. Distance traveled in the car: - The car catches up with the tourist on the uphill and takes the tourist to the station in 15 minutes. - The formula for distance is given by: distance = speed × time. - Therefore, the distance traveled in the car is: distance_car = v × (15/60).

4. Total distance traveled: - The total distance traveled is the sum of the distances traveled on the flat road, uphill, and in the car. - Therefore, the total distance traveled is: total_distance = distance_flat + distance_uphill + distance_car.

Formula for the Distance Traveled by the Tourist

The formula for the distance (s) traveled by the tourist is:

s = a × 2 + b × 0.5 + v × (15/60)

Please note that the above formula assumes that the speeds 'a', 'b', and 'v' are in km/h, and the time is in hours.

Let me know if you need any further assistance!