Physics

Problem

10\,\text{kg}

sled is at rest on a perfectly frictionless frozen lake. It contains a small explosive charge that splits the sled into two pieces of mass

4\,\text{kg}

and

6\,\text{kg}

that slide directly away from each other along a straight line. The

4\,\text{kg}

piece moves

9.0\,\text{m\,s}^{-1}

to the east. How far apart are the two pieces

5.0

seconds after the explosion? a)

90\,\text{m}

75\,\text{m}

45\,\text{m}

105\,\text{m}