Question

The position of a function is given by s(t)=4t²+2t+3, where s is measured in feet and t in seconds. Find the velocity of the object at time t=2 seconds.

Answer 1

Let \(t=2\).

Answer 2

or, "Plug in" \(2\).

Answer 3

oh okay thanks!

Answer 4

if u just plug in 2, u only get distance, which is measured in feet

Answer 5

so the answer would be 23 ft/s²?

Answer 6

the derivative of a distance function represents instantaneous velocity, so u need to get the derivative of that function 1st, then plug in t=2~

Answer 7

Oh.. This is Physics, not math. @Iyy1992 is right; I did not read it entirely.

Answer 8

v=s'(t)=8t+2+0, plug in t=2 >>> 18. hope helps