Physics, 07.07.2019 15:30, lovecats12

Achild is sliding down a slide at the playground. is the mechanical energy conserved? why or why not? the mechanical energy is conserved. there is as much ke at the end as there was pe at the beginning. the mechanical energy isn't conserved. some energy is lost to friction. mechanical energy is always conserved. the mechanical energy isn't conserved. some energy is lost to gravity.

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Achild is sliding down a slide at the playground. is the mechanical energy conserved? why or why no...