Grade 11 motion physics question?

Charles

New member
I'm not sure how to complete this question...

"Given that the radius of the earth is 6.4 * 10^6 m and the mass is 6.0 * 10^24 kg, calculate the acceleration due to gravity of an object 5km above the earth's surface."

I assume the answer is naturally 9.8m/s^2, but i don't know exactly how to solve for it.
Help is much appreciated.
 
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