Sunday, October 13, 2013

Newton's Second Law Video Resource



Obviously, this video is recommended for children so that they understand Newton's Second Law. I realize that we are not 5 years old, but I also realize that science is science no matter the age. I chose this video because it clearly states the definition of Newton's Second Law which is that acceleration depends on the mass of an object and the amount of force applied. This was shown when we did the lab in class with the carts and the extra mass that we added or took away from the cart or kept constant and the acceleration increased when the mass decreased and the acceleration decreased when mass increased. Remember, mass is inversely proportional to mass which means when acceleration does one thing, mass does another. The other equation in Newton's Second Law is that acceleration is directly proportional to force. So when acceleration increases, force increases and when acceleration decreases, force decreases.

This video helps me learn Newton's Second Law because of the visual examples. When the man pushes a child with a certain amount of force and then pushes a man with a greater mass than a child with the SAME amount of force, the child goes faster and higher which means the acceleration is greater for the child and less for the man who has a greater mass. This example goes right back to the equation acceleration is inversely proportional to mass. Since the boy had a lower mass, the acceleration was higher. When the man had a greater mass, the acceleration was lower.

I found this video useful for me because sometimes what helps me understand things is when I am spoken to like a kid. Slowly and using examples that even a chimp would understand. Less is more!

I hope this video helps you!

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