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OpenStudy (anonymous):
It takes 20 N of force at a 60* angle to roll a barrel across the floor. The barrel moved a distance of 6.0 m in 3.0 s. How much power was generated? a: 20 watts b:40 watts c: 80 watts d 120 watts
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OpenStudy (ksaimouli):
P=Work/time
OpenStudy (ksaimouli):
w=20 cos(60) (6)=60J
OpenStudy (ksaimouli):
60/3=20 watts
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