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<h2>x = 4.545</h2>Step-by-step explanation:
Given the expression
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<em>It results -14 in either way</em>
Step-by-step explanation:
<u>Velocity As A Rate Of Change </u>
The velocity of an object can be computed as the rate of change of its displacement (or position taken as a vector) over time. If we compute it as a derivative, it's called instantaneous velocity, and if computed as the slope of the function (difference quotient) at a certain point it's the average velocity
The position of the object as a function of time is
Computing the derivative
We can see it's a constant value. If we use the slope or rate of change:
Now let's fix two values for time
and compute the corresponding positions, by using the given function
Now we compute the average velocity
We get the very same result in both ways to compute v. It happens because the position is related with time as a linear function, it's called a constant velocity motion.