A ball is thrown into the air by a baby alien on a planet in the system of Alpha Centauri with a velocity of $29$ft$/$s$.$ Its height in feet after $t$ seconds is given by $y=29t-12t^2.$

A$.$ Find the average velocity for the time period beginning when $t=3$ and lasting

$\mathrm{.}01s$

$\mathrm{.}005$ s:

$\mathrm{.}002$ s:

$\mathrm{.}001$ s:

NOTE: ror the above answers, you may have to enter $6$ or $7$ significant digits if you are using a calculator.

Estimate the instanteneous velocity when $t=3.$