What type of energy is kinetic energy?

Answer 1

The kind that transform through motions hence kinetic.

Water falling... used in to move the motor on generators

Wind blowing... used to turn rotors that move the motor on generators

Heat coming out of frictions

And so on.

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"Energy" is way to quantify the amount of force that is capable of being applied over a distance. For example if you move a block of steel on a very very long track then the distance you are able to move the block before you pass out is equivalent the amount of "energy" in your body.

In this example, the amount of energy in your body is potential energy, specifically chemical potential energy from the chemical reactions that move your muscles in your body.

But the velocity that you end up moving the block at corresponds to the kinetic energy.

So if you move it "harder" aka with more acceleration, then the block will move faster and have more kinetic energy.

Specifically, the kinetic energy (KE) of a body is:

KE = 1/2 * m * v^2 (one half the mass times the velocity squared)

And, without friction, the speed of the block is proportional to the squareroot of the chemical potential energy from your muscles that has been put into the block to move it.