Physics
posted by Fallon .
A child who has a mass of 17 kg slides down a slide from a height of 3.3 m. If friction does a nonconservative work of 143 J, what is the speed (in m/s) of the child at the bottom of the slide? The acceleration due to gravity is 9.81 m/s2

Physics 
bobpursley
final KE= initialPEfrictionenergy
1/2 m vf^2=m g 3.3  143
calculate vf
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