Question

Два хоккеиста движутся на встречу друг другу со скоростями 10м/с и 54км/ч. Через какое время они встретятся, если в момент начала отсчёта времени расстояния между ними было 62 м

Answer 1

Дано
V1=10 м/с
V2=15 м/с
S=62 м
t-?
Свяжим систему координат с 1 игроком, тогда уравнение движения 2 игрока будет  X2=62-V2t  минус движется против оси ОХ. Для 1 игрока
X1=V1t Встреча при равных Х1=Х2  
62-15t=10t    t=62/25=2.48 с

Answer 2

Calculating the Time of Meeting for Two Hockey Players

To calculate the time it takes for two hockey players to meet, we can use the formula:

time = distance / relative speed

Where: - distance = initial distance between the players - relative speed = sum of their speeds if they are moving towards each other

Given: - Player 1's speed = 10 m/s - Player 2's speed = 54 km/h - Initial distance = 62 m

First, we need to convert Player 2's speed from km/h to m/s: - 54 km/h = 54 * (1000 m / 3600 s) = 15 m/s

Now we can calculate the relative speed: - Relative speed = 10 m/s + 15 m/s = 25 m/s

Using the formula, we can find the time it takes for them to meet: - time = 62 m / 25 m/s = 2.48 seconds

So, the two hockey players will meet after approximately 2.48 seconds.