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What is the velocity of the second fragment immediately after the explosion?
A fireworks rocket is shot straight up in the air. Its mass, 3.80 kg, explodes just as it reaches its peak height and separates into two fragments before eventually exploding again into spiraling colors. The first fragment, of mass 1.1 kg, heads straight down with an initial speed of 15 m/s. What is the velocity of the second fragment immediately after the explosion?
At the instant it reaches an altitude of 1000 m and a speed of 300 m/s it explodes into three fragments. The 1st fragment has twice the mass of either the 2nd or 3rd fragments and continues to move upward with a speed of 200 m/s. The second fragment has a speed of 240 m/s and is moving east right after the explosion.
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