Question

velocity and amplitude different

Answer 1

VELOCITY- velocity of a body is the distance travelled by the body per unit time in a given directions. i.e
velocity =distance travelled in a given direction/ time taken
AMPLITUDE- the maximum displacement of the particles of the medium from their original undisturbed positions , when a wave passes through the medium , is called amplitude of the wave

Answer 2

Amplitude....
==================
1 ) the amplitude is half of the pressure difference between one rarefraction and compression.
2 ) it's unit depends upon type of wave..
3 ) The logarithm of the amplitude squared is usually quoted as db...

Velocity....
===========
1 ) IT is a vector quantity.
2 ) the velocity of a object is the rate of change of its position with respect to a frame reference and is a function of time..
3 ) it's SI Unit is m/s...
and symbol is ( v )