Question

An object of mass 10 kg is dropped from a height of 100m find its .-—kinetic energy and velocity ,just as it reaches the ground

Answer 1

we know by conservation of energy change in kinetic energy is equal to change in pottential energy

so from the question we have a free fall which means initial kinetic energy and final pottential energies are equal to zero since initial velocity and final height is zero

therefore,

$mgh = \frac{1}{2} m(v)^{2}$

calculation:= above ^