Chapter 15, Problem 40P

To determine

To find: The change in entropy.

Explanation of Solution

Introduction:

When some object is in kinetic energy and it strikes with another object which makes the object to come in rest, then the K.E of that object converted to thermal energy.

Let KE is the kinetic energy just before hitting the ground and finally come into rest, then heat produced will be equal to change in KE, therefore, entropy $=\frac{\text{ change in KE}}{\text{Temperature}}$

  $\Rightarrow \Delta S=\frac{\Delta KE}{T}$