An object is pushed forward by a force of for and then pulled backward by a force of for

PHYSICS · Subjective · AP · Physics 1: Algebra-based · Linear Momentum · Linear Momentum

Problem

An object is pushed forward by a force of

+50\,\text{N}

for

2.0\,\text{s}

and then pulled backward by a force of

-30\,\text{N}

for

5.0\,\text{s}

. Without performing detailed numerical calculations, indicate whether the object’s momentum after the

7.0\,\text{s}

interval is greater than, less than, or equal to its initial momentum, and briefly explain your reasoning.