Achild slides down a slide with a 28° incline, and at the bottom her speed is precisely one half what it would have been if the slide had been frictionless. calculate the coefficient of kinetic friction between the slide and the child. here's the two equations i used: sin28*m*g=m(v2/t) since v2=v1+at the other one is with friction: sin28*m*g-u*cos28*m*g=m((1/2*v2)/t)

μ=0.13

Explanation:

If there would be no friction:

Solving for the speed:

Since her speed is precisely one half what it would have been if the slide had been frictionless:

By kinetics equation:

  where Vo=0

Solving for a:

By a sum of forces:

 where

Replacing the value for N, and a:

Solving for μ:

a. vertically

explanation:

i tried it and took the test

if im wrong then we have different tests