Jamal wanted only to test the effect of the free fall and so he put his system in a vacuum to prevent air resistance. In free fall, will the crumpled or flat paper reach the ground first?

In a vacuum, there is no air resistance to slow either piece of paper. Objects in free fall near Earth accelerate at the same rate regardless of their shape or mass, so the crumpled and flat papers reach the ground at the same time. The crumpled paper would fall faster in air, but that difference is caused by air resistance.

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