What is a mechanical wave ?

Which of the following is a mechanical wave?

What kind of mechanical waves exist (a) Inside water? (b) On the surface of water?

What do mechanical waves transfer : energy, matter, both or neither ?

Mechanical Waves

What is the evidence in support of the fact that (a) sound is a wave (b) sound is a mechanical wave (c) sound waves are longitudinal.

(a) What is mechanical energy ? (b) What is electromagnetic energy ?

Suppose you throw someone a ball, thereby transporting kinetic energy. Could you consider the motion of the ball to be a mechanical wave ?