A cart initially at rest on a frictionless track draws in small beads that enter…

PHYSICS · Subjective · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

1.5\,\text{kg}

cart initially at rest on a frictionless track draws in small beads that enter horizontally from behind it at a constant rate

0.20\,\text{kg}\,\text{s}^{-1}

with speed

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

relative to the track. Assuming the inflow lasts for

5.0\,\text{s}

and all beads remain in the cart, calculate the cart’s speed at the end of the

5.0\,\text{s}

interval.