An apple (m=0.20 kg) falls to the earth. Determine (a) the apple's acceleration towards the earth; (b) the earth's acceleration towards the apple. (c) Discuss the appropriate reference frames in which to determine the accelerations in (a) ansd (b).

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Appliction of Newto's universal gravitational law. The solution shows hoe to combine this with Newton's second law to obtain the acceleration of a falling object.

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