A block sliding to the right along a horizontal frictional surface has an initial velocity of...
A block sliding to the right along a horizontal frictional surface has an initial velocity of 12.4 m/s and stops in 110 m due to friction with the surface.
Find the acceleration of the block.
Find the coefficient of kinetic friction between the block and the surface.
Homework Answers
u =12.4 m/s , v =0, s =110 m
From kinematic equation
v^2 -u^ =2as
0 -u^2 =2as
a = -u^2/2s = -[12.4*12.4]/(2*110)
a = -0.699 m/s2
Fk = ma
uk *N= ma
uk*mg =ma
uk =a/g = 0.699/9.8
uk = 0.0713
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