TR
f
k
= μ
k
mg, a = ±μ
k
g, t* = |v
b
− v
0
| / (μ
k
g), Q
total
= ½m(v
b
− v
0
)²
v
b
2.0 m/s
v
0
0.0 m/s
μ
k
0.30
m
2.0 kg
t
0.00 s
v
box
=
0.00
m/s
t* =
—
s
Δ
slip,total
=
—
m
Q
total
=
—
J
W
drive
(t) =
0.00
J
ΔK
box
(t) =
0.00
J
Q(t) =
0.00
J