medinahernandez medinahernandez

17-02-2016
Mathematics

contestada

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

Respuesta :

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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