A rolling ball has 18 joules of kinetic energy and is rolling 3 m/s find the mass

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17-02-2016
Mathematics

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A rolling ball has 18 joules of kinetic energy and is rolling 3 m/s find the mass

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klee48 klee48 · Answer 1 · 2016-02-17T00:41:32+01:00

klee48 klee48

17-02-2016

Hi there. I think that this question is supposed to go in the Physics category but I'll help you.
the equation for kinetic energy is 1/2mv^2.
Plug the given values in.
18=1/2(m)(3)^2
18=1/2m(9)
36=9m
m=4

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