Calculate the following question-

Question- A 2900-kg test rocket is launched vertically from the launch pad. Its fuel (of negligible mass) provides a thrust force so that its vertical velocity as a function of time is given by v(t)=At+Bt², where A and B are constants and time is measured from the instant the fuel is ignited. At the instant of ignition, the rocket has an upward acceleration of 1.30m/s² and 2.00s later an upward velocity of 1.91m/s.

Part 1- At 3.80s after fuel ignition, what is the acceleration of the rocket?

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