Question

Поезд отходящий от станции в течении первых 20 сек движется прямолинейно и равноускорено известно что за вторую секунду поезд прошел 2 метра .определите перемещение поезда за первую сек при ускорении поезда

Answer 1

На держи, и минутка для модераторов эту задачу нельзя решить и я её скинул фоткой

Answer 2

Calculation of the Train's Displacement in the First Second

To determine the displacement of the train in the first second, we need to use the given information that the train moves in a straight line with constant acceleration and that it traveled 2 meters in the second second.

Let's denote the displacement of the train in the first second as s1 and the acceleration of the train as a.

According to the equations of motion, the displacement of an object with constant acceleration can be calculated using the following formula:

s = ut + (1/2)at^2

Where: - s is the displacement - u is the initial velocity - t is the time - a is the acceleration

In this case, the initial velocity (u) is not given, but we can assume that the train starts from rest, so u = 0.

Using the given information that the train traveled 2 meters in the second second, we can substitute the values into the formula:

2 = 0 + (1/2)a(2^2)

Simplifying the equation:

2 = 2a

Dividing both sides of the equation by 2:

a = 1

Therefore, the acceleration of the train is 1 m/s^2.

Now, we can calculate the displacement of the train in the first second using the same formula:

s1 = 0 + (1/2)(1)(1^2)

Simplifying the equation:

s1 = 0.5 meters

Therefore, the displacement of the train in the first second is 0.5 meters.

Please note that the calculations are based on the assumption that the train starts from rest and that the acceleration remains constant during the first second.