If the ball has mass 0.10 kg and it is rolling so that the speed of its center is 0.75 m/s, what is its kinetic energy?

i get 0.028 but webassign says my answer is wrong

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That is because you have to use 7/10 instead of 1/2 in the fomula KE=1/2mv^2

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source: Physics 1250 lab manual

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If the ball has mass 0.10 kg and it is rolling so that the speed of its center is 0.75 m/s, what...

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