Sound waves need different media in order to travel. This travels by the movement of the atom transferred to another up to its destination. The speed of sound is greatest in solids since the molecules of solid are closely packed together, followed by liquid and they are slowest in gases.
Answer:
True
Explanation:
As the formula for magnitude of a vector v and their components
is

Since
, this means the sum of them,
, is always greater or equal to 