Question

Две вагонетки катятся навстречу друг другу со скоростью 0,5 м\с и 0,4 м\с .Через какое время вагонетки столкнутся ,если первоначальное расстояние между ними 135м ?

Answer 1

0,4 м/с+0,5 м/с=0,9 м/с
135 м/0,9 м/с=150с

Answer 2

Calculation of the Time for the Carts to Collide

To calculate the time it takes for the carts to collide, we can use the formula:

Time = Distance / Relative Speed

Given that the initial distance between the carts is 135 meters and the carts are moving towards each other with speeds of 0.5 m/s and 0.4 m/s, we can substitute these values into the formula to find the time it takes for the carts to collide.

Time = 135 meters / (0.5 m/s + 0.4 m/s)

Calculating the sum of the speeds:

Time = 135 meters / 0.9 m/s

Simplifying the equation:

Time = 150 seconds

Therefore, the carts will collide after approximately 150 seconds.