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14 April, 08:17

Can a train about 2 km long be taken as a material point when calculating the distance traveled in a few seconds?

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  1. 14 April, 08:32
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    1) Each point of the train set moves along one path, therefore the segment connecting any two of its points remains parallel to itself at any time.

    2) Thus, the movement of the train is progressive. This means that its size and shape can be neglected.

    3) Therefore, the composition of the train can be taken as a material point.

    Answer: The train is a material point in this task.
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