Physics

Problem

3.0\,\text{kg}

puck sliding due east at

6.0\,\text{m/s}

suddenly breaks into three equal

1.0\,\text{kg}

fragments. Two fragments each move away at

5.0\,\text{m/s}

, one at

45^{\circ}

north of east and the other at

45^{\circ}

south of east. Determine the speed of the third fragment.