Multiple Choice
What is the power output needed from a motor to lift,in the absence of friction,a mass of 1.5 104 kg 25 m in 6.0 s at constant speed?
A) 2.0 106 W
B) 6.1 105 W
C) 2.2 104 W
D) 8.3 105 W
E) 3.1 105 W
Correct Answer:

Verified
Correct Answer:
Verified
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