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Feb11-13, 12:11 PM
P: 149
Quote Quote by Doc Al View Post
They are only equal under certain circumstances. Such as when the object is no longer accelerating.

That "extra" force comes from the collision of the moving object with the ground. The material structure of the ground allows it to resist the movement of the object by exerting an upward force on it.
Hm. I see.

Thank you for your help! I appreciate it a lot. :)