Physics, 06.07.2019 07:00, kaitttt

The position-time equation for a certain train is xf=2.8m+(8.1m/s)t+(2.9m/s^2)t^2. what is the initial velocity of this train? what is its acceleration?

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The position-time equation for a certain train is xf=2.8m+(8.1m/s)t+(2.9m/s^2)t^2. what is the initi...