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If you push on a heavy box that is at rest, you must exert some force to start its motion. 5. however, once the box is in motion you need a smaller force to maintain that motion…

If you push on a heavy box that is at rest, you must exert some force to start its motion. 5. however, once the box is in motion you need a smaller force to maintain that motion…
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If you push on a heavy box that is at rest, you must exert some force to start its motion. 5. however, once the box is in motion you need a smaller force to maintain that motion. why?

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User Retromuz
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The potential energy has turned into kinetic energy and energy is not lost on the box, some is lost to friction, but most of it is still kept.
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User Saeed Zarinfam
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