Cart A of mass travels east at on a frictionless

PHYSICS · Single correct · CBSE · Physics · Work, Energy and Power · Work, Energy and Power

Problem

Cart A of mass

0.50\,\text{kg}

travels east at

2.0\,\text{m/s}

on a frictionless, straight track. It collides and sticks to cart B of mass

1.0\,\text{kg}

that is initially at rest on the same track. What is the speed of the combined carts immediately after the collision? (a)

1.0\,\text{m/s}

(b)

0.33\,\text{m/s}

(c)

0.67\,\text{m/s}

(d)

2.0\,\text{m/s}