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A 720-kg two-stage rocket is traveling at a speed of 6.90×10^3 m/s away from Earth when...

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Physics

A 720-kg two-stage rocket is traveling at a speed of 6.90×10^3m/s away from Earth when a predesigned explosion separates therocket into two sections of equal mass that then move with a speedof 2.10×10^3 m/s relative to each other along the original line ofmotion.What is the speed of each section (relative to Earth) afterthe explosion? R/= v1=5850, v2=7950. How much energy was suppliedby the explosion? [Hint: What is the change in kinetic energy as aresult of the explosion?] R/= 3.97*10^8 J. Could somebody help meto know why the answer to C is 3.9*10^8J?

Answer & Explanation Solved by verified expert
3.7 Ratings (281 Votes)
Given Rocket mass M 720 kg initial speed is v 690103 ms after explosion the speed is 210103 ms and after the explosion the the speed is v1v2    See Answer
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