A mover is pushing horizontally on a very large box with a force of 850 N, but he can’t get it to move. Draw a free body diagram for the box. Draw a free body diagram for the box and the mover. With how much force is the box pushing back on the mover?

Q: What is a free-body diagram .A It's a sketch of a moving body that shows internal forces of the body…

A: Question: What is a free-body diagram?

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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!