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9) Can a trajectory be elliptical and hyperbolic at the same time? If no, why? If yes, explain by drawing the trajectories (5pt) 10) What's

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9) Can a trajectory be elliptical and hyperbolic at the same time? If no, why? If yes, explain by drawing the trajectories (5pt) 10) What's the difference between escape velocity (Vesc) and Vinf? How is the total kinetic energy of a spacecraft related to Vesc and Vinf? Explain it(5pt)

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