Physics

Problem

Two identical toy cars, each of mass

1.5\,\text{kg}

, are pushed from rest on a smooth floor. Car P receives

36\,\text{J}

of work, while car Q receives

18\,\text{J}

. What is the ratio of their final speeds

v_P : v_Q

? a)

2:1

1:1

\sqrt{2}:1

1:\sqrt{2}