If s(x) = x – 7 and t(x) = 4x2 – x + 3, which expression is equivalent to (t circle s) (x)?
2 answers:
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To solve this we are going to use the formula fro the force applied to a spring: 
where
is the spring constant
is the extension
Since we know the
, we can replace that in our formula and solve for 
:
where
is the acceleration
is the spring constant
is the extension
is the mass
We know for our problem that
, 
, and 
. So lets replace those values in our formula to find :
We can conclude that the acceleration of the block when s=0.4m is
.
where
Since we know the
where
We know for our problem that
We can conclude that the acceleration of the block when s=0.4m is