Question

object of mass 10 kg is dropped from a height of 20 m calculate the potential energy and kinetic energy

Answer 1

potential energy at height of 20m
mgh = 10×9.80×20
and kinetick energy
$\frac{1}{2} \times 10 \times 2 \times 9.8 \times 20 \\ 9.8 \times 20 \times 10$
kinetic energy is equal to its potential energy