If an object with a mass of $10 kg$ is moving on a surface at $3m/s$ and slows to a halt after $4 s$ , what is the friction coefficient of the surface?

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Answer 1 · 2016-03-05T19:52:10

$u_k~=0,076$

$v_l=v_i-a t$
$0=3-4 a" "a=3/4 m/s^2$
$F_f=m a$
$u_k cancel(m) g=cancel(m) a$
$u_k *9,81=3/4$
$u_k~=0,076$

If an object with a mass of 10 kg 10 kg is moving on a surface at 3m/s3m/s and slows to a halt after 4 s 4 s, what is the friction coefficient of the surface?