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A projectile is fired straight upward from the Earth's surface at the South Pole with an initial speed equal to one third the escape speed. (The radius of the Earth is 6.38 x 106 m.)

(a) Ignoring air resistance, determine how far from the center of the Earth the projectile travels before stopping momentarily.

________m

(b) What is the altitude of the projectile at this instant?

________m

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