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

the total distance that martina travels that day is

(distance from home to mom's office) plus (distance from mom's office to school)

plus (distance from school to library) plus (distance from library to friend's house)

plus (distance from friend's house to martina's house).

(we don't know what any of these distance actually is.)

causes

fossil fuels burn

cities become more industrialized

human population grows worldwide