[Answered] 4. A fireworks rocket is fired vertically upward. At its maximum height of 80.0m, it explodes and breaks into two

4. A fireworks rocket is fired vertically upward. At its maximum height of 80.0m, it explodes and breaks into two pieces; one with mass 1.40kg and the other with mass 0.28kg. In the explosion, 860J of chemical energy is converted to kinetic energy of the two fragments. 1. What is the speed of each fragment just after the explosion

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