A colonist on a distant planet with a radius 0.92 times the earth's is pulling on a box of mass 12 kg across the floor. The coefficient of static friction between the box and the floor is 0.70. He has to pull with a force of greater than 73N to start the box moving.(adsbygoogle = window.adsbygoogle || []).push({});

a) Determine the mass of the planet.

b) Determine the acceleration due to gravity of an object in free fall near the surface of the planet.

c) On the earth, if the colonist were to throw the box directly upward as hard as he could, it would reach a maximum height of 6.3m. How high would the box go if he threw it on this planet?

d) What is the total time this box would be in the air? How does this compare to the time in the air if thrown upwards on the surface of the earth?

Here are my answers, but I am not sure about all of the answers.

a)4.5*10^24

b)8.7

Not sure here

c)5.6

Reallynot sure here

d)2.269 and for the second part i have no idea what's flying.

Thanks for all your help in advance

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# Homework Help: Movement on foreign planets

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