A bullet is fired horizontally into a wooden block that rests on a frictionless…

PHYSICS · Single correct · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

10\,\text{g}

bullet is fired horizontally into a

990\,\text{g}

wooden block that rests on a frictionless horizontal surface. The bullet remains embedded, and the combined bullet-block system slides off at

2.0\,\text{m/s}

immediately after the impact. What was the speed of the bullet just before it struck the block? (a)

100\,\text{m/s}

(b)

20\,\text{m/s}

(c)

200\,\text{m/s}

(d)

198\,\text{m/s}