Physics, 29.08.2019 23:00 yessicasaenz9878
Acatapult launches a test rocket vertically upward from a well, giving the rocket an initial speed of 80.4 m/s at ground level. the engines then fire, and the rocket accelerates upward at 3.90 m/s2 until it reaches an altitude of 1130 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 what is its velocity just before it hits the ground?
Answers: 1
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