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A 1600 kgkg weather rocket accelerates upward at 10m/s2m/s2. It explodes 2.2 ss after liftoff and...

A 1600 kgkg weather rocket accelerates upward at 10m/s2m/s2. It explodes 2.2 ss after liftoff and breaks into two fragments, one twice as massive as the other. Photos reveal that the lighter fragment traveled straight up and reached a maximum height of 500 mm .

What was the speed of the heavier fragment just after the explosion?

Express your answer in meters per second.
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