Serway‘ζ‚WΝƒ|ƒeƒ“ƒVƒƒƒ‹‚ΖƒGƒlƒ‹ƒM[•Ϋ‘Ά‘₯
ƒvƒŠƒ“ƒg–β‘θ“š‚¦

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) 1.jpg m/s

D.
2 m

E. ‘ζ‚WΝ
–β‘θ‚S
(a) 2.jpg
(b) 3.jpg

–β‘θ‚V
(a) 40 J
(b) -40 J
(c) 62.5 J

–β‘θ‚X
(a) -9 JAŒo˜H‚ΙˆΛ‘Ά‚΅‚Θ‚’
(b) 3.39 m/s
(c) +9 J

–β‘θ‚P‚X
(a) -160 J
(b) 73.5 J
(c) 28.8 N
(d) 0.679