A cart moving on a smooth

PHYSICS · Subjective · CBSE · Physics · Work, Energy and Power · Work, Energy and Power

Problem

4.0\,\text{kg}

cart moving on a smooth, straight track with a speed of

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

collides head-on and elastically with a second cart of unknown mass

m

that is initially at rest. After the collision, the first cart is observed to move backward with a speed of

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

. Determine the value of

m