4. A rocket is fired vertically upward. At the instant it reaches an altitude of 1000 m and a speedof 300 m/s, it explodes into three fragments, each with equal mass. One fragment continuesto move upward with a speed of 450 m/s following the explosion. The second fragment has aspeed of 240 m/s and is moving east immediately after the explosion. What is the velocity ofthe third fragment immediately after the explosion? [510 m/s, 61.9°]

In an explosion, the momentum of the system remains conserved. Given: The velocity of the rocket is…

Answered: 4. A rocket is fired vertically upward.…

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