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22-05-2020
Physics

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If a 42kg rolling object slows from 11.5 m/s to 3.33 m/s how much work does friction do?

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917006450984help 917006450984help

22-05-2020

Explanation:

work done by friction = 1/2 x 42 x ( 3.33^2 - 11.5^2)

= 21 ( 11.08 - 132.25)

= 21 ( - 121.17 )

= - 2544.57 J

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