A cart moves at on a horizontal

PHYSICS · Single correct · AP · Physics C: Mechanics · Linear Momentum · Linear Momentum

Problem

0.50\,\text{kg}

cart moves at

2.4\,\text{m/s}

on a horizontal, frictionless track and collides with a

0.30\,\text{kg}

block that is initially at rest. The cart and block stick together. Immediately afterward, the

0.80\,\text{kg}

composite object collides elastically with a second cart of mass

0.80\,\text{kg}

that is at rest. What is the speed of the second cart after the elastic collision? (a)

0.90\,\text{m/s}

(b)

2.4\,\text{m/s}

(c)

1.5\,\text{m/s}

(d)

0.75\,\text{m/s}