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add more blocks and increase the mass

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Give the ball higher elevation so it gains more speed.

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More Blocks]

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add more blocks to it

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the hollow ball would roll further than the solid ball if we add more blocks to it so the GPE is higher so the ball would go further  because of KE and you could add more mass

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I would add mass to the hollow ball and less blocks for the solid ball.

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add more blocks

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#Ri# add more blocks for the hollow ball add less blocks for the solid ball

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#Ri# add more blocks for the hollow ball add less blocks for the solid ball

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add more block to it

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you could add more blocks to the hollow ball and less to the solid ball

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Add more weight to the ball so it can actually go more than one card.

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it will roll farther if we add more blocks to it

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i would add more blocks and the hollow ball made it further because the hollow ball has more mass than the solid ball

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I would add a weight so the ball has more mass and I would also add more blocks.

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add more blocks instead of 5 block.

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Add even more blocks so it has more GPE to turn into KE

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The way I could of made the hollow ball roll further then the solid ball is by adding more mass to the hollow ball or adding even more blocks to the ramp to improve its GPE.

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i would stack 5 blocks up then i lay the ruler down and let it roll then for solid let it roll down 1 block

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I would let the hollow ball roll down 5 blocks and the solid roll down 1 block.

k