Question

A boy of mass 60 kg and a girl of mass 40 kg are togetherand at rest on a frozen pond and push each other apart. Thegirl moves in a negative direction with a speed of 3 m/s. Whatis her momentum?

Answer 1

Given:

The mass of the boy is,

$m_b=60\text{ kg}$

The mass of the girl is

$m_g=40\text{ kg}$

The gi