A cart moving to the right collides and sticks to a stationary cart on a frictionless…

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

Problem

2.0\,\text{kg}

cart moving to the right collides and sticks to a stationary

1.0\,\text{kg}

cart on a frictionless track. The combined carts move to the right at

1.2\,\text{m/s}

immediately after the collision. What was the speed of the

2.0\,\text{kg}

cart just before impact? (a)

1.5\,\text{m/s}

(b)

3.6\,\text{m/s}

(c)

1.8\,\text{m/s}

(d)

1.2\,\text{m/s}