Chapter 14, Problem 14.4PAE

Interpretation Introduction

Interpretation:

A fastball thrown by a professional baseball pitcher travels at about 100 mph. If the mass of a baseball is about 145 g, the kinetic energy of the baseball thrown at this speed should be compared to cosmic radiation at 15 MeV.

Concept introduction:

The kinetic energy of an object is calculated as follows:

$\text{K}\text{.E=}\frac{\text{1}}{\text{2}}{\text{mv}}^{\text{2}}$

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