AP Physics 1mediummcq1 pt
A 3.0 kg box is pushed 6.0 m up a frictionless 30° incline at constant speed (g = 10 m/s²). The work done by the pushing force is
A.90 J
B.180 J
C.45 J
D.30 J
Explanation
Core Concept
W = mgh = (3.0)(10)(6.0 sin 30°) = 90 J.
Correct Answer
A90 J
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