Question: A hand moves a block vertically upward. Its speed slows down as it moves up ( it is decelerating ) . The work done by

A handmovesa block vertically upward. Its speed slows down as it moves up (it is decelerating). The work done by gravity on the block ____if the system consists of the block only. The work done by gravity on the block ____if the system consists of the block and the earth

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