Question: A 5 0 kg crate might require 2 0 0 N to slide across a concrete floor. If we must slide it 1 0 m

 A 50 kg crate might require 200 N to slide across a concrete floor. If we must slide it 10 m along the floor and then lift it 2 m into a truck, how much energy goes into each action, and what fraction of the total energy expenditure is each? 

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