On planet Zog, Mr Spock measures that it takes 1.41 s for a mass of 0.3 kg to hit the ground when released from rest from a height of 3.09m. Calculate the size of acceleration of gravity on that planet.(adsbygoogle = window.adsbygoogle || []).push({});

I know that a= GM/r^2, but I don't know the radius. Any suggestions on where to begin?

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# Homework Help: Gravity Acceleration problem

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