children in a tree house lift a small dog in a basket 4.50 m up to their house. if it takes 221 J of work to do this, what is the combined mass of | Cheap Nursing Papers

children in a tree house lift a small dog in a basket 4.50 m up to their house. if it takes 221 J of work to do this, what is the combined mass of

children in a tree house lift a small dog in a basket 4.50 m up to their house. if it takes 221 J of work to do this, what is the combined mass of the dog and the basket?

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