Please watch 05:00 to 08:00 Force = Mass x Acceleration So for example, F=10 grams x 3 acceleration What that really means is, F=10 grams x 1 acceleration F=10 grams x 1 acceleration F=10 grams x 1 acceleration So for every X amount of mass, you get X amount of acceleration. There's a relation here. The amount of mass you get for every acceleration is constant. It has to be. That's the logic behind multiplication. If you have 3 balloons, & multiply them by 3, you get 9. Because 3 x 1 + 3 x 1 + 3 x 1 = 9. If 3 x 1 didn't always equal 3, then the equation would collapse. Let's go back to the example, F= 10 grams x 3 acceleration = 30 If I double the mass, I get 20 grams. So, 60. If I double the acceleration, I get 6. So, 60. I'm not seeing this "building up of squares." Leibniz was convinced that the energy of an object was made up of it's mass x it's velocity, squared So why no f=ma^2 I guess I don't understand the difference between energy & force.