Respuesta :

Answer:

[tex]x_i = -19.5 m[/tex]

Explanation:

As we know that the displacement is defined as the change in the position.

So we will have

[tex]displacement = x_f - x_i[/tex]

here we know that

displacement = 17 m

initial position = ?

final position is given as

[tex]x_f = -2.5 m[/tex]

so we have

[tex](-2.5 m) - x_i = 17 m[/tex]

[tex]x_i = -2.5 - 17[/tex]

[tex]x_i = -19.5 m[/tex]

Explanation:

Given that,

Displacement of the train, [tex]d=17\ m[/tex]

Final position of the train, [tex]x_f=-2.5\ m[/tex]\

To find,

The initial position of the train.

Solution,

The displacement of an object is the shortest path covered. We know that,

Displacement = final position - initial position

Put all the values,

[tex]d=x_f-x_i[/tex]

So,

[tex]x_i=x_f-d\\\\x_i=-2.5-17\\\\x_i=-19.5\ m[/tex]

Answer:

The initial position of the train is [tex]-19.5\ m[/tex].

Reference:

https://brainly.com/question/17131235

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