A 18.0-kg rock is sliding on a rough, horizontal surface at 7.10 m/s and eventually stops due to friction. the coefficient of ki

Question

3 years ago

15

netic friction between the rock and the surface is 0.175. what average power is produced by friction as the rock stops?

1 answer:

Bond [772] · Answer 1 · 2022-07-11T18:25:07+03:00

Bond [772]3 years ago

4 0

A = .3*g = 2.94 m/s²

<span>t = v/a = 9/2.94 = 3.061 sec </span>

<span>W = E/t = ½mv²/t = ½*40*9²/3.061 = 529.2 watts</span>