A 10-kg wagon moves horizontally at an initial speed of $$\(5 \mathrm{~m} / \mathrm{s}\)$$. A $$\(30-\mathrm{N}\)$$ force is applied to the wagon by pulling the rigid handle, which is angled $$\(60^{\circ}\)$$ above the horizontal. The wagon continues to move horizontally for another $$\(20 \mathrm{~m}\)$$. A negligible amount of work is converted into thermal energy. By how much has the wagon's kinetic energy increased over the $$\(20 \mathrm{~m}\)$$ ?

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