Math $255$

Worksheet Mod $3$

Provide a numerical answer and a descriptive sentence answer.

The height $s($in feet$)$ at time $t($in seconds$)$ of a coin dropped from the top of a building is given by $s=-16t^{2}555.$

$($a$)$ Find the average velocity over the interval $2,3$

$y=-16t^{2}555$

$2-$vars

$3.$ Right arrow

$4.$Y$1(3)-$

$5.$ vars

$6.$ Right arrow

$7,1(2)$

$8.3-2$

$($b$)$ Find the instantaneous velocities when $t=2$ and $t=3.$

$($c$)$ How long will it take the coin to hit the ground?

$($d$)$ Find the velocity of the coin when it hits the ground.

$1$