Question

A object weighing 10N is dropped from a height of 4 metres above a ground. when it falls freely through a distance of 1 metre, its total mechanical energy with respect to the ground is​

Answer 1

10 kg is raised to height 10 m from rest stayed by applying a force 120 Newton in vertical upwards direction find its final connecting energy and mechanical energy taken 0th of gravitational potential energy on the earth