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Newton's second law of motion is
F=ma

How does the speed of a ball of mass m change as it falls from point a to point b?
continous change of position and speed: changing all the time

(change of possition)/(change in time)
average speed

How fast the object is moving at some moment is
instantanious speed

how is an increasing function defined?
when a < b, f(a) < f(b)

pythagorean theorem
x^{2 }+ y^{2}^{} = r^{2}

using the pythagorean theorem, how do you find the equation of a circle?
solving for y

(#)^{1/2}
not a real number


the absolte value of x is?
x when x is greater than or equal to zero, and x when x<0

