A ball is thrown vertically downward from a height of with an initial speed of

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

Problem

0.5\,\text{kg}

ball is thrown vertically downward from a height of

10\,\text{m}

with an initial speed of

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

. It experiences a constant upward air resistance force of

2\,\text{N}

. Determine its speed just before it reaches the ground.