A cart glides east at on a level

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

Problem

2.0\,\text{kg}

cart glides east at

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

on a level, frictionless track and collides with a

1.0\,\text{kg}

cart that is initially at rest. The carts stick together. What is their speed immediately after the collision? (a)

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

(b)

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

(c)

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

(d)

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