Question

⬇️⬇️⬇️Решите пожалуйста ⤵️⤵️⤵️15б Шоссе проходит через пункты А и B, расстояние между которыми 65км. Мотоцикл едет со скоростью x км/ч, а грузовик -yкм/ч. Запишите на математическом языке, через какое время мотоцикл выехавший из пункта А: а) догонит, б) встретит грузовик, одновременно в ним выехавший из B. ТАК НАПИСАННО В УЧЕБНИКЕ!!!

Answer 1

А) скорость сближения x-y, догонит через 65:(x-y) часов.
б) скорость сближения x+y, встретит через 65:(x+y) часов.

Answer 2

Problem Analysis

To solve this problem, we need to find the time it takes for a motorcycle, traveling at a speed of *x* km/h, to either catch up to or meet a truck traveling at a speed of *y* km/h. The distance between points A and B is 65 km.

Time to Catch Up

The time it takes for the motorcycle to catch up to the truck can be found using the formula: time = distance / relative speed

Time to Meet

The time it takes for the motorcycle and the truck to meet when they start from points A and B simultaneously can be found using the formula: time = distance / (speed of motorcycle + speed of truck)

Let's calculate the time for both scenarios.

Calculations

1. Time to Catch Up: - Time for the motorcycle to catch up to the truck: 65 / (y - x) [[1]]

2. Time to Meet: - Time for the motorcycle and truck to meet: 65 / (x + y) [[2]]

So, the time for the motorcycle to catch up to the truck is 65 / (y - x), and the time for the motorcycle and truck to meet when they start from points A and B simultaneously is 65 / (x + y).

This should help you solve the problem as per the instructions in your textbook. If you have any further questions or need additional assistance, feel free to ask!