Dr. S K Jain and Dr. Shailesh K Jain Solutions for Chapter: Work, Energy and Power, Exercise 3: CLASS ASSIGNMENT 3

What is the SI unit of power?

What is the commercial unit of energy?

When do we say that $1 \mathrm{J}$ of work is done.

Define $1 \mathrm{W}$ of power.

What are the various energy transformation that occur when you are riding a bicycle?

A certain household has consumed $250 \mathrm{units}$ of energy during a month. How much energy is this in $\mathrm{Joules}$?

A freely falling object eventually stops on reaching the ground. What happens to its kinetic energy?

A body is falling from a height $h$. After it has fallen $\frac{h}{2}$, it will possess :