Hi there, it is your average pathetic junior. anyways, i need on 8& 9 asap, this assignment is beyond overdue but hey who cares. oh yeah me, which is why i am asking for . so give it to me : ). show all work . giving brainliest.

a) -31.36 m/s

b) 50.176 m

Explanation:

This is a problem of motion in one direction (specifically vertical motion), and the equation that best fulfills this approach is:

 (1)

Where:

is the final velocity of the supply bag

is the initial velocity of the supply bag (we know it is zero because we are told it was "dropped", this means it goes to ground in free fall)

is the acceleration due gravity (the negtive sign indicates the gravity is downwards, in the direction of the center of the Earth)

is the time

Knowing this, let's solve (1):

 (2)

Hence:

 Note the negative sign is because the direction of the bag is downwards as well.

In this case we will use the following equation:

(3)

Where:

is the distance the bag has fallen

remembering the bag was dropped

is the acceleration due gravity (downwards)

is the time

Then:

(3)

(4)

Finally: