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# Acceleration on gravity

Based on the following data about planet X (which has a circular orbit around the Sun):Planet X’s distance from Sun = 4.81012 m Planet X’s radius = 1.6106 m Planet X’s mass = 6.41022 kg

a.) Find gx, the size of the acceleration due to gravity on the surface of Planet X. 1.668m/s2

b.) What is the weight of a 10 kg mass on the surface of Planet X? 16.68N(How does this compare to its weight on Earth?)

c.) How long would it take for a ball dropped from a height of 2 m to hit the ground? 3.463X s(How does this compare to the time it would take on Earth?)

d.) At 2 of Planet X’s radii above the planet’s SURFACE, what is gx?m/s2

e.) For Planet X’s orbit around the Sun, please find:its orbital speed:m/szs/wits centripetal acceleration:

f.) How long is a year on Planet X? Express your answers in both seconds and Earth years: S Earth years Note this word is boldfaced, underlined and capitalized***and asterisked.

#### This is a sample question

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