An air-track cart of mass moves rightward at and collides elastically with an…

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

Problem

An air-track cart of mass

0.75\,\text{kg}

moves rightward at

1.8\,\text{m/s}

and collides elastically with an identical cart that is at rest. What is the speed of the first cart immediately after the collision? (a)

1.8\,\text{m/s}

(b)

0.90\,\text{m/s}

(c)

0\,\text{m/s}

(d)

-1.8\,\text{m/s}