Both a 50-Kg Sack Is Lifted 2 Meters from the Ground

question 57

Multiple Choice

Both a 50-kg sack is lifted 2 meters from the ground and a 25-kg sack is lifted 4 meters in the same time.The power expended in raising the 50-kg sack is

• A)twice as much.
• B)half as much.
• C)the same.
• D)impossible to predict without further information

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