Q. A 40g bullet moving at 490 m/s strikes a 2.5kg wooden block. The bullet passes through the block, leaving at 280m/s. The block was at rest when it was hit. How fast is it moving when the bullet leaves?
Q. A sealed cubical container 17cm on a side contains three times Avogadro's number of molecules at a temperature of 16°C. Find out the force exerted by the gas on one of the walls of the container.