Physics

Problem

A child pulls a toy car of mass

1.5\,\text{kg}

to the right with a horizontal force of

4.0\,\text{N}

on a frictionless surface. What horizontal force must another child apply to the left so that the car remains at rest? a)

14.7\,\text{N}

4.0\,\text{N}

2.7\,\text{N}

0\,\text{N}