Cart X has a mass of and moves east at

PHYSICS · Single correct · AP · Physics 1: Algebra-based · Force and Translational Dynamics · Force and Translational Dynamics

Problem

Cart X has a mass of

2.0\,\text{kg}

and moves east at

3.0\,\text{m\,s}^{-1}

. Cart Y has a mass of

4.0\,\text{kg}

and moves east at

1.0\,\text{m\,s}^{-1}

. What is the speed and direction of the center of mass of the two-cart system? (a)

2.0\,\text{m\,s}^{-1}

east (b)

2.5\,\text{m\,s}^{-1}

east (c)

1.7\,\text{m\,s}^{-1}

east (d)

1.7\,\text{m\,s}^{-1}

west