1. The problem statement, all variables and given/known data A metal rod of length 1.0 m is hit with a hammer at one end. It takes 5.5x10^-4 s for the compression pulse generated to travel to the other end and reflected back to the end hit by the hammer. Find the Young Modulus of the metal. (Given: density of the metal = 9.0x10^3 kg m^-3) 2. Relevant equations E=FL/Ae D=M/V 3. The attempt at a solution D=M/V=M/(AxL) (L=1m) I just don't know how to make use of the data given. Clueless. My head's gonna explode!