Ffriction
= m a = coefficient friction x Fnormal = coefficient
friction x m g
cf m g
a = ----------- = coefficient friction x g = 0.054 x
9.80 m/s2 = 0.529 m/s2
m
Forward is positive thus acceleration is negative
vf = 0 (box stops)
vf 2 - vi 2
02 - (30.0 m/s)2
X = ---------------- = -------------------------- = 851 meters
2a
2 x ( - 0.529 m/s2) |
