A cart moving at collides head-on elastically with a stationary cart on a…

PHYSICS · Single correct · AP · Physics 1: Algebra-based · Linear Momentum · Linear Momentum

Problem

2\,\text{kg}

cart moving at

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

collides head-on elastically with a stationary

3\,\text{kg}

cart on a frictionless track. The speed of the

2\,\text{kg}

cart just after the collision is (a)

+4.8\,\text{m\,s}^{-1}

(b)

+2.4\,\text{m\,s}^{-1}

(c)

-1.2\,\text{m\,s}^{-1}

(d)

+1.2\,\text{m\,s}^{-1}