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The Radius of Earth Is 6,378 Km

Question 22

Multiple Choice

The radius of Earth is 6,378 km. The force of gravity on a 1 kg ball at Earth's surface is 9.8 kg m/s2.  What is the force of gravity on this same ball when the ball is located 12,756 km from Earth's center? Hint: G = 6.67  10-11 m3/s2/kg


A) 2.45 kg m/s2
B) 4.9 kg m/s2
C) 9.8 kg m/s2
D) 19.6 kg m/s2
E) 39.2 kg m/s2

Correct Answer:

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