Two ice skaters

PHYSICS · Single correct · CBSE · Physics · Laws of Motion · Laws of Motion

Problem

Two ice skaters, initially at rest on frictionless ice, push off each other. Skater A has a mass of

60\,\text{kg}

and glides westward at

2.0\,\text{m}\!\cdot\!\text{s}^{-1}

immediately after they separate. Skater B has a mass of

50\,\text{kg}

. What is skater B’s velocity just after the push? (a)

2.0\,\text{m}\!\cdot\!\text{s}^{-1}

east (b)

2.4\,\text{m}\!\cdot\!\text{s}^{-1}

east (c)

2.4\,\text{m}\!\cdot\!\text{s}^{-1}

west (d)

1.6\,\text{m}\!\cdot\!\text{s}^{-1}

east