# Net work 2

A $$2.0 \text{ kg}$$ particle with initial velocity $$5 \hat{x} – 4\hat{y} \text{ m/s}$$ now has a velocity of $$7\hat{x} + 3\hat{y} \text{ m/s.}$$ Assuming that no energy was lost in the process, how much work was done by the resultant force during the time interval?

$$\hat{ x } \text{ and } \hat{ y}$$ are unit vectors along x and y directions in a $$2$$-dimensional plane.

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