DYNAMICS $($ENGR $202)$

Due &

The crate shown has a mass of $20kg$ and

is being pulled with a force $F$ that has a

magnitude of $100N$ and a direction $30$

above horizontal, as shown. The coefficient

of kinetic friction between crate and ground

is ${}_K=0\mathrm{.}25.$ At one instant, it is seen to have

a velocity of $8\frac{m}{s}$ to the right. Use the

work$-$energy principle to predict what the

velocity will be after it has slid $10$ meters

further to the right.