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RATINGS: Sites are rated from 1 owl (good) to a high of 5 owls. Read more- The Most Important Equation in Physics
Without it, planets wouldn't orbit, electric eels would go hungry, and elephants couldn't fall out of windows. "It" is force, and there are many different types. Newton's second law reveals how much a body will accelerate when acted upon by a net force (and how much an elephant will speed up as it plummets).
Examples of How to Use the Most Important Equation in Physics Use Newton's second law to solve problems involving car manufacturing and gravity.
- Physics Comics: Force and Acceleration
What better way to learn physics than through comics? Two characters practice their bicycling and physics skills, showing how force, mass, and acceleration are related. Click on "next page" at the bottom for a continuation of the discussion and a cameo appearance by Sir Isaac Newton himself.
- Newton's Second Law
Newton's second law is the only one that has an actual formula: F = ma. This makes it very concise, but people are still confused at times about its application in conjunction with Newton's other laws. NASA compresses the history of the study of F = ma onto one sky-blue webpage.
- Newton's Second Law of Motion
The big F takes on a new meaning in physics (as opposed to report cards): force. whenever forces are not balanced, an object accelerates. The size of the force and the mass of the object both affect acceleration, and the interactive chart on this mostly text high school webpage reveals how, giving visitors a clearer understanding of Newton's second law.
- The Skylab Diet
Apply a force to an astronaut (such as a push on a wheeled chair) and measure the acceleration. Send the astronaut into space and, when she returns, give her a push of the same magnitude. More of an acceleration will register. Why? Because astronauts lose mass in space (on average 3 to 6 pounds of muscle mass in one month). See how NASA studied and tried to correct this unexpected loss of mass.
- The Big Misconception
Anna Litical and Noah Formula (get it?) always argue about the forces acting in a particular FBD. Why? Because although many students memorize Newton's laws, they don't actually grasp the concepts they describe. This high school website delves deeper into the actual effects of Newton's law to help visitors develop a more intuitive approach to physics.
Newton's Second Law
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