SerwayζWΝ|eVΖGlM[ΫΆ₯
vgβθ¦
A.
(a) U(y)=Ay
(b) U(x)=Bx2-Cx
B.
(a) U(x)=2x3
(b) U(x)=1/x
C.
(a) 0.4 m
(b) m/s
D.
2 m
E. ζWΝ
βθS
(a)
(b)
βθV
(a) 40 J
(b) -40 J
(c) 62.5 J
βθX
(a) -9 JAoHΙΛΆ΅Θ’
(b) 3.39 m/s
(c) +9 J
βθPX
(a) -160 J
(b) 73.5 J
(c) 28.8 N
(d) 0.679