Question

An athelete in olympic games covers a distance of 100 m in 10 s.His kinetic energy is estimated to be in the range

Answer 1

kinetic energy is given by 0.5×mass× the square of the velocity

here the velocity can be deduced by,

v=s÷t

Answer 2

Answer:

Explanation:

When an object falls freely towards the ground, its potential energy decreases and kinetic energy increases.

As the object touches the ground, all its potential energy gets converted into kinetic energy.

As the object hits the hard ground, all its kinetic energy gets converted into heat energy and sound energy.

It can also deform the ground depending upon the nature of the ground and the amount of kinetic energy possessed by the object.