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Equation of a parabola and work

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(3) A wagon is pulled a distance of 100m along a horizontal path by a constant force of 50N. The handle of the wagon is held at an angle of 30 degree above the horizontal. How much work is done?

(4) Find an equation of a parabola that has curvature 4 at the origin.

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Using very brief calculation, this solution determines the amount of work done and an equation for the parabola.

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