a bullet is dropped from the same height when another bullet is fired horizontally they will hit the ground

simultaneously

Time taken to reach the ground depends on the vertical component of velocity, not horizontal component of velocity.

layers of the earth affect the waves and these effects are seen on instruiments such as seimometers

the order for strong to weak forces such as

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force

the fundamental forces are those forces that act between to objects or element to make interactions. there are four types of fundamental forces such as strong and weak nuclear forces (due to protons and electrons), electromagnetic force (due to the motion of electrons) and gravitational force (due to orbital movement of the planet). if these forces are arranged on the basis of their maximum strength then the order is

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force