A Child Does 350 J of Work While Pulling a Box

question 89

Multiple Choice

A child does 350 J of work while pulling a box from the ground up to his tree house at a steady speed with a light rope. The tree house is 4.0 m above the ground. What is the mass of the box?

• A) 5.3 kg
• B) 6.7 kg
• C) 8.9 kg
• D) 8.0 kg

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