A 1-Kg Block Is Lifted Vertically 1 M at Constant

question 64

Multiple Choice

A 1-kg block is lifted vertically 1 m at constant speed by a boy.The work done by the boy is about:

• A)1 ft*lb
• B)1 J
• C)10 J
• D)0.1 J
• E)0 J

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