Question: A model rocket is fired vertically from rest It has a constant acceleration of 24.5 m/s for the first 1.50 s. Then its fuel

A model rocket is fired vertically from rest It has a constant acceleration of 24.5 m/s for the first 1.50 s. Then its fuel is exhausted, and it is in free fall. The rocket has a mass of 79.5 g; the mass of the fuel is much less than 79.5 g. Ignore air resistance. How long after liftoff does the rocket return to the ground?

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