7.18. Circle to parabola **A spaceship travels in a circular orbit around a planet. It applies a suddenthrust and increases its speed by a factor f. If the goal is to change theorbit from a circle to a parabola, what should f be if the thrust points in the tangential direction? Is your answer any different if the thrust pointsin some other direction? What is the distance of closest approach if theedhe thrust points in the radial direction?7 10 Zero notential

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A spaceship travels in a circular orbit around a planet. It applies a sudden thrust and increases its speed by a factor f. If the goal is to change the orbit from a circle to a parabola, what should f be if the thrust points in