Answer:
0.04
Explanation:
From

Here m is mass, a is acceleration,
is the coefficient of kinetic friction and g is acceleration due to gravity.
Making
the subject of the formula

From kinematics, we know that

Here, v is final speed, u is initial speed, a is acceleration and s is distance moved.
Making a the subject of the formula then

Since it stops, the final velocity is 0 while the initial speed is given as 13.7 m/s
Substituting 0 for v, 13.7 for u, 216.9 m for s then

Taking g as
then using the formula
