Download or read book Investigating Forces and Motion written by Jane Weir and published by Teacher Created Materials. This book was released on 2007-08-03 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: Forces can't be seen, but without them, nothing around us would happen! A force is a push or pull that usually causes movement. Friction is a force that opposes motion and slows things down or stops them. Famous scientist and mathematician Sir Isaac Newton wrote the rules about forces and motion.