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A 5.0kg cart initially at rest is on a smooth horizontal surface. A net horizontal force of 15N acts on it through a distance

A 5.0kg cart initially at rest is on a smooth horizontal surface. A net horizontal force of 15N acts on it through a distance of 3.0m. Find (a) the increase in the kinetic energy of the cart and (b) the cart's speed after moving 3.0m.

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