The body falls without an initial speed from a height of 20m at what height will the inertia be equal to the patacial?

These tasks: fall without initial velocity (Ek1 = 0 J); h1 (starting height) = 20 m.

The height at which the potential energy of the body in question will be equal to the kinetic one (Ek2 = En2) is determined from the equality: En1 = Ek2 + En2 = 2Ep2 and m * g * h1 = 2 * m * g * h2, whence h2 = h1 / 2 = 20/2 = 10 m.

Answer: The potential energy of the body in question will be equal to the kinetic energy at a height of 10 meters.