The force on a particle, acting along the x axis, varies as shown in the figure.
Area above the x-axis is positive work; below is negative work.
A) See image for assumptions made about break points in chart. I get
W = (600 + 1600 + 600) J = 2800 J
B) Ditto; I get
W’ = 2800J – (200 + 300 + 150)J = 2150 J
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