Objects in Motion

Principles of Classical Mechanics

From the Series Secrets of the Universe

  • Interest Level: Grade 6 - Grade 12
  • Reading Level: Grade 6

Have you ever wondered why things drop to the ground instead of float or fly? Or how a heavy satellite can orbit Earth without crashing into it? From Copernicus and Kepler to Galileo and Newton, the scientific laws that show how and why things move are explored.

Format Your Price Add
Interest Level Grade 6 - Grade 12
Reading Level Grade 6
Genre Science
Publisher Lerner Publishing Group
Imprint Twenty-First Century Books ™
Language English
Publication Date 2001-08-01
Dewey 531
ATOS Reading Level 7.3
Accelerated Reader® Quiz 64234
Accelerated Reader® Points 2.0
Features Activities, Awards, Bibliography/further reading, Charts/Graphs/Diagrams, Glossary, Index, Reviewed, Table of contents, Timeline, and Websites


  • Science Books & Films Best Books, Winner, 2002


Science Books & Films

“With no apparent technical flaws, this book’s merits are many. . . this book’s clear and accessible expository style is captivating.”
Editor’s Choice, Science Books & Films

The Horn Book Guide

“The five volumes in this series [Secrets of the Universe] clearly explain complex subjects in well-organized texts.”
The Horn Book Guide

The Science Teacher

“I found the writing style enjoyable and appreciated the historical background. I recommend Objects in Motion for the middle and high school physical science classroom.”
The Science Teacher

Author: Paul Fleisher

Paul Fleisher has spent his working life as an educator and writer. His books for young people cover a variety of science, ecology and natural history subjects. He has also written several widely-used classroom activity books on thinking games, social activism, and creative writing. Paul currently works as an adjunct professor in the school of education at Virginia Commonwealth University, as well as assistant to the director of the Richmond Peace Education Center. He also teaches classes in writing at the University of Richmond. Prior to taking early retirement in 2005, he taught gifted elementary and middle school students in the Richmond, Virginia Public Schools for almost 30 years. During that time, he helped develop numerous interdisciplinary instructional units on topics including Humor, Justice, Engineering and Design and The Art and Science of Music. Paul was in the vanguard of teaching educational technology in Richmond Public Schools, teaching computer programming and web design to his students. He has offered workshops on team-building, thinking games, teaching writing, and other topics at educational conferences for many years. Paul remains an activist for peace and social justice. He currently serves on the boards of the Virginia Forum and the Virginia Museum of Natural History. He has also served terms on the Virginia Education Association's Fitz Turner Commission for Human and Civil Rights, and the Virginia Chapter of the ACLU. In 1988 Paul received the Virginia Education Association Award for Peace and International Relations and in 1999 he was awarded the Thomas Jefferson Medal for Outstanding Contributions to Natural Science Education. It is Paul's great good fortune to be married to educator Debra Sims Fleisher, who has taught him much of what he knows about working in a classroom, as well as how to live as a more decent human being. In his spare time Paul is an avid gardener, cook, and reader.