the figure shows the velocity of a train as a function of time. at what time was

Question

the figure shows the velocity of a train as a function of time. at what time was it's velocity the greatest?

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Explanation / Answer

Maximum velocity is determined where the graph hits the highest point of the curve.
From the graph, it can be understood that the velocity is highest at time, t = 50 seconds
The value of velocity v = 40 m/s approx.

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