Chapter 1, Problem 1.20P

Interpretation Introduction

Interpretation:

The SI unit of kinetic and potential energy should be verified equal to joule.

Concept Introduction:

Kinetic energy (E_k) is defined as, half of mass (m) times square of velocity (v) of an object.

  $E_k=\frac{1}{2}m{v}^2$

Here, m is mass and v is velocity of the object.

Similarly, potential energy (E_p) is defined as, mass (m) times acceleration due to gravity (g) times change in elevation ( $\Delta$ z) of an object.

  $E_p=mgh$

Here, m is mass, g is acceleration due to gravity and h is height of the object from ground.