A father, whose mass is 82.5 kg, is watching her daughter sleep. He exerts 6.45 x 10-8 N of gravitational force to her 25kg daughter. How far is her father from her? A. 146 meters B. 1.46 centimeters C. 14.6 meters D. 146 centimeters

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Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!