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Gjmdp
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Homework Statement
Calculate velocity. x=position. t=time
Homework Equations
x=16-12t+2(t^2)
The Attempt at a Solution
Derivative of x: v=4t-12
Ok let's try:
Equation of x: x=16-12t+2(t^2)
Equation of v: v=4t-12
With the equation of x: x(3)=-2 then v(3)=-2/3.
Ok, but with the equation of v: v(3)=0.
There are different results! Why?
What am I doing wrong?
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