Physics

Problem

10\,\text{g}

bullet moving horizontally with speed

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

embeds itself in a wooden block of mass

1.99\,\text{kg}

initially at rest on a smooth horizontal surface. Find the speed of the bullet–block system just after the impact. a)

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

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

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

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