How do you find the speed of kenetic energy

Kinetic energy of a moving object = (1/2 of the mass) x (speed²).

Divide each side by (1/2 of the mass)

and you get:

Speed² = (KE) / (1/2 of the mass)

Take the square root

of each side: Speed = √ (2 · KE / mass).

That's what you need, right there.

If you know the kinetic energy, then ...

- - double it,

- - divide by the object's mass,

- - take the square root.

Now you have the object's speed.