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Question:

A 75-m-long train begins uniform acceleration from rest. The front of the train has a speed of 18 m/s when it passes a railway worker who is standing 180 m from where the front of the train started. What will be the speed of the last car as it passes the worker? (See Fig. 2-38.)

Figure 2-38.

Source: Giancoli, Douglas C., Physics: Principles with Applications, 7th Edition, 2014.

$21\textrm{ m/s}$