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Solve the all parts of following question:
Question: A catapult launches a test rocket vertically upward from a well, giving the rocket an initial speed of 80.2 m/s at ground level. The engines then fire, and the rocket accelerate upward at3.80 m/s2 until it reaches an altitude of 930 m. At that point its engines fail, and the rocket goes into free fall, with an acceleration of 9.80 m/s2. (You will need to consider the motion while the engine is operating and the free-fall motion separately.)
Part A: For what time interval is the rocket in motion above the ground?
s
Part B: What is its maximum altitude?
km
Part C: What is its velocity just before it hits the ground?
m/s
I don't just need an answer, work and explanations/walkthrough would be much appreciated! Thanks.
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