Fifth Grade Physics
We learned from earlier grade levels that physics allows us to study the phenomena that happen on earth and discover the rules behind these phenomena. Once we know these rules, we can use them to our advantage. All we have to do is follow them. For example, there is a rule in your school library that you can borrow only three books at a time. Most students may borrow three books, read them all and then return them before borrowing another three. However, did it occur to you that you can borrow three books, return one, and borrow another one while still having the other two from the first time you borrowed? This is a similar example of how scientists follow the laws of physics, but use them to their advantage.
Another example can involve the law of gravity. We know that the earth has a gravitational pull and that is why objects can fall towards the earth. However, we have seen that a ball that is thrown will not fall on earth right away, rather it stays in the air until it loses momentum and gravity pulls it downwards. Physicists have been able to calculate how much force you will need to keep that ball sailing in the air for as long as you want it. This type of equation is similar to the type of equation physicists and engineers started with when they began to design an engine that could keep a large object traveling in the air. Because of their successful calculations, we now have planes and are able to travel great distances very quickly and easily.
Most of the engineering marvels we observe today are marvels we can thank physics for. However, none of this may have been possible without a proper understanding of the laws which govern objects on earth, and in our entire universe. The understanding of these laws came from one very special man who revolutionized the world of physics. His formulated laws have changed the way we live and the way we view the universe and ourselves in it.
Newton's Laws of Motion
Isaac Newton was one of the greatest physicists who ever lived. Through his observations of natural phenomena, and through dedicated studying, he was able to formulate the three laws of motion, now known as Newton's laws of motion. The formulation of these laws by Newton was a great turning point in the world of physics because it paved the way for much of the technology and knowledge we have today. It also opened up new branches of study in physics.
Page Two: Fun Facts About Newton’s Laws of Motion (Fifth Grade Physics continued)
