Explain how a moving object could have a motion diagram that is the same as that of an object at rest?

Answer 1

um objeto em movimento pode ter um diagrama de movimento que é idêntico ao de um objeto em repouso se o referencial em que o movimento é observado se move com a mesma velocidade e direção que o objeto. Em outras palavras, o diagrama de movimento é relativo ao referencial escolhido e pode parecer idêntico se o movimento do referencial e do objeto forem iguais.

Answer 2

A motion diagram is a visual representation of an object's position at different time intervals. If a moving object has a motion diagram that appears the same as that of an object at rest, it means that the object is moving in such a way that its position does not change over time relative to the reference frame used.

Here’s how this could happen:

Constant Position: If the moving object is moving at a velocity of zero (i.e., it’s not actually moving in the reference frame being used), its position would not change over time. In this case, each dot in the motion diagram would be at the same location, which is exactly what you'd see for an object at rest.

Motion in a Reference Frame Moving at the Same Velocity: If the object is moving at a constant velocity but the reference frame itself is moving at the same velocity in the same direction, then the object would appear to be at rest relative to that reference frame. For example, if you're on a train moving at the same speed and in the same direction as another train, the other train might appear stationary to you even though it's actually moving.

In both cases, the motion diagram would show the object at the same position at each time interval, just like an object at rest.