Triangles Can be Solved Using: 1  Pythagoras's Theorem. 2  Sine Rule. 3  Cosine Rule. 4  Angles all add up to 180 degrees.
Report Abuse. sound travels fastest in solid substances. as in solids, the medium is denser and it aids the propogation of sound. sound will not travel in vaccum as they will not propogate if no material medium is present. in air it travels with the speed of 350 m/s which is less than the speed of sound in solids.
S-waves travel more slowly, usually at 2.5â4 km/sec (9000â14,000 km/h). Sound waves are usually called P-waves and are heard but not often felt. Except in the most powerful earthquakes they generally do not cause much damage.