Two students, A of mass and B of mass

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

Problem

Two students, A of mass

50\,\text{kg}

and B of mass

40\,\text{kg}

, stand at rest on frictionless ice. After they push apart, student A moves backward at

1.2\,\text{m/s}

. What is the speed of student B immediately after the push? (a)

1.34\,\text{m/s}

(b)

1.5\,\text{m/s}

(c)

0.96\,\text{m/s}

(d)

1.2\,\text{m/s}