The exception is air resistance. A feather falls slower than a bowling ball because its air resistance is 1000X more. In a Vacuum with no air they fall at the same speed.
Two objects with the same surface area and wind resistance will fall at the same speed.
here we have a 10Kg block of wood with the same air resistance at a 10 ton tank. They will fall at the same speed because they have the same air resistance.
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