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Q: The rocket sled has a mass of 3 Mg and starts from rest when t = 0. If the engines provide a horizontal thrust T

The rocket sled has a mass of 3 Mg and starts from rest when t = 0. If the engines provide a horizontal thrust T which varies as shown in the graph, determine the sled’s velocity in t = 4 s. Neglect air resistance, friction, and the loss of fuel during the motion.

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