Anyone want to help me do this silly assignment?

[Anonymous]

I forgot about it and I can't keep going to the bathroom to finish it at my
restaurant job so. Whoever has the best will get a like and best answer choice thanks!

[MTC29]

The law of conservation of energy states that energy can neither be created nor destroyed, only converted from one form of energy to another. This means that a system always has the same amount of energy, unless it's added from the outside.

When you lift the ball from its resting surface, you are transferring energy from your muscles to the ball. Once the ball is above your head, the ball has gravitational potential energy (GPE)= height x weight. When you release the ball, its GPE
is transformed into kinetic energy (KE), which is the potential energy of an object in motion.

When the ball hits the floor the kinetic energy is transformed into sound energy or thermal from the friction created, and some becomes elastic potential energy
resulting from the instantaneous deformation of the ball when it collides.

This question has been around since I was in engineering school. Hell, Roman civil engineering students were probably being asked this same question 2,000 years ago.

BS civil engineering, structural engineer (Structures I and II).
Master of Engineering, materials Science.

[Asker]

Thank you so much! A blessing is coming your way lol. I’m a waitress and i’ve had a lot on my plate i’ll be in time for now thanks

[MTC29]

Good luck with your studies.

[Guffrus]

Not really an instantaneous deformation of the ball.

An excusable mistake for a waitress perhaps but I expect more from an engineer.

[Rachelspiks]

"... gravitational potential energy (GPE)= height x weight..."
Actually, gravitational potential energy is equal to mgh - mass times the gravitational acceleration (which is usually approx. 9.81 m/s squared), times the height.

[Rachelspiks]

MTC29 - The rate at which a ball falls to the ground will not be affected by its size or weight, the rate being consistent and uniform for all objects that are not hindered by air resistance (ex. a feather). That's why saying "height times weight" is wrong.

[Asker]

being a waitress is a job title it has nothing to do with education & don’t try and embarrass somebody because he was right I its in might notes. @Guffrus good day

[Guffrus]

@asker You are quite correct to say that a job title does not have anything do with a persons education. I was well aware of this before you brought it up.

You are incorrect to claim that my intention is to embarrass, the purpose is to ensure you are receiving correct information.

Describing it as instantaneous may well serve your purpose, it may even serve an engineers purpose a lot of the time, but it is not correct.

This is not a judgement about expectations.

A waitress is not expected to know an engineer making a show of his credentials, is.

I might also point out by the way that while a waitress may well be extremely bright and well educated, this specific waitress is asking for help with this question, which rather undermines your misdirected outrage.

[Guffrus]

This is a judgement about expectations*

[Asker]

@Guffrus I know you know that but the “perhaps” part was not needed lol but it is correct should you expect nothing but correct information on this topic. I wish I could add a source to the link I found along with it being thought in my class.

[Guffrus]

Furthermore, if you really want to drill into this, you will find that I am the one championing the idea that although you may only be a waitress, that does not infact mean that its ok to fob you off with a dumbed down half answer.

Perhaps I was wrong to upvote this answer and arrogantly and insultingly support the idea that this was probably good enough for your purposes.

I dont really know and i dont particularly care, but you can't have it both ways and I am not going to consider it to be ok for you to throw false accusations at me when all i am doing is helping you at your request.

I am not guilty of the crimes you assign to me, you however, are.

[Asker]

lol it’s okay its not that deep hopefully i get a good grade *sigh* because i found your reasoning on a few websites along with his and my teachers. so i should get a good grade actually now that i think of it lol

[henryscott]

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[Rachelspiks]

Basic physics. Fun! :)
MTC29 wrote a good summary of what takes place, but I'll respond anyway with my own version of events.
That which holds the ball in place a certain distance from the ground, and which counteracts the force of gravity, is the chemical energy that is expended by the person in question. At the instant the ball is released, such energy is no longer being used to maintain the ball's position, and it contains only potential energy.
As the ball falls to the ground, that potential energy is gradually and consistently converted into kinetic energy, the kinetic energy reaching its maximum value at the instant the ball hits the ground.
The forms of energy thus described - chemical, potential and kinetic - are both interchangeable and indestructible, and the very definition of energy is that which is required by a system in order to complete a given, useful task: that is, it is that which a system needs in order to do work.
There! You should get an A+ :)
If not, I'll want to talk to the teacher.

[Ryfyle]

No, Fuck you. Do your own stupid easy homework.

[Asker]

shut the hell up and stop cursing lol

[Ryfyle]

No, get fucked.

[Anonymous]

would a soccer ball work or is that too big?