Physics

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1. John used a force of 300N to push his younger brother in a wagon for 500m.How much work did John do?

2. How much work must be done to move a 100.0kg crate a distance of 10.0m across a floor that has a coefficient of sliding friction of 0.25?

3. What is the coefficient of sliding friction if 7700J of work is required to move a box of mass 65kg a distance of 47 meters up a long ramp that has a 7 degree slope?

4. Susie is pulling a wagon with a force of 42.7 Newtons at some angle with the horizon.If she exerts 3275J of work to move the wagon 85 meters, what is the angle of the wagon tongue?

5. At the end of boating season, you desire to raise your 1450kg sailboat 12.5 meters vertically to put it into dry storage. If you use a winch with a 2.5 horsepower motor that is 100% efficient,how many minutes will it take to raise your boat?