Pls help its due today What is the velocity of a cup dropped from a building if it takes 8.8 seconds for the cup to hit the ground? (Gravity = -9.8 m/s2).

vf= 86.24

Explanation:

Basic physics kinematic problem right. So we assume if this is freefall the object or cup in this case is falling with an initial speed of zero and then starts to accelerate due to the force of gravity. First lets see what equations we should use:

Imma use

d=vi+vf/2*t

d=vi*t+ 1/2*a*t^2

First I will solve for distance just to make it easier for me to use the equations.

d= 0(initial speed)*8.8s+1/2*(9.8m/s^2)(8.8)^2 or just d=1/2*(9.8m/s^2)(8.8)^2

d= 379.456

Alright lets use this info in the next equation

379.456= 0 + vf / 2 *8.8 or  379.456= vf/2 *8.8= vf= 86.24m/s

there is no correct list among the choices you've provided.

the list might look something like this:

-- baby human

-- piccolo

-- flute

-- soprano singer

-- trumpet

-- tenor singer

-- trombone

-- baritone singer

-- baritone horn

-- bass singer

-- tuba

since i had to make up the list myself, i made it easy on myself, and i didn't try to shuffle the string instruments and woodwinds into it too.

grav potential energy