Question

The position of an object at time t is given by s(t) = -9 - 3t. Find the instantaneous velocity at t = 8 by finding the derivative.

Answer 1

\[\frac{ d }{ dt }s(t) = v(t)\]

Answer 2

Or you can see that s(t) is linear, and the velocity is constant at all times, the slope of the line

Answer 3

so how would i plug this in @DanJS

Answer 4

Show the derivative of s,
\[v(t) = \frac{ d }{ dt }s(t) = \frac{ d }{ dt }[-9-3t]\]