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Janneh · Answer 1 · 2015-08-08T20:11:30+0000

Answer: When walking the two forces you have to overcome are gravity and the ground pushing you up.

Step-by-step explanation:

Daniel Fanjul · Answer 2 · 2015-08-14T12:43:08+0000

Gravity is pushing you down on the earth while the friction from the ground is pushing you up. Those are the two frictions you must overcome when walking.

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