Do you mean for the girl and bicycle problem? And I am not sure what you mean by, "divide the KE". But you want to solve for the mass and it is v^2 times the mass, so to get the mass to the other side you have to divide both sides by the v^2. Does that help?
Do you mean the girl and bicycle problem? And I am not quite sure what you mean by "divide the KE". But you want to solve for the mass and the mass is multiplied times the v^2 so you have to divide both sides by the v^2. Does that help?
The problem was KE = 0.5 (600kg) (20m/s)^2 First do the (20m/s)^2 so that would be 20 times 20 and that is equal to 400. So now we have this... KE = 0.5 (600kg) (400m/s) Now multiply the mass and velocity... 600kg multiplied by 400m/s is equal to 240,000 So now we have this... KE = 0.5 (240,000) Then multiply 240,000 to 0.5, that is equal to 120,000 J So the KE = 120,000 J Always remember to put the unit J that stands for joules when finding the Kinetic Energy.
There is no kinetic energy in a moving mass there is force Mv squared kinetic energy is the energy of consistent work from a consistent force regards Graham Flowers
Ok ill be the stupid person. You say energy is 120,000 joules. This means nothing to me. Explain how I can relate that to real world to understand? Like if you day thats a stove sitting on your hand... that’s how it feels.... then i have some understanding of how much energy that is. I know I should know more but U don’t. 😁
Very good question, From PE =mgh If you carry a 100 kg mass up a height of 120 meters you will do 120,000 J of work. Does that help? Here are some other examples: The amount of energy one utilizes in lifting a cup of water from the table to one's mouth equals approximately 1 Joule. One "dietary Calorie" is 4186 J (4.186 kJ). One gram of gasoline releases about 50 kJ on combustion in air. A small car (about 1200 kg) travelling at 65 miles per hour (105 km/h) has a kinetic energy of 1 megajoule (1 MJ). One "kilowatt-hour" is 3.6 MJ. One ton of TNT releases 4.184 GJ on exploding.
Thank you for taking the time to explain this equation. Your presentation always great.
Glad it was helpful! And thanks for commenting.
I have a Physics test tomorrow and this really clarified and gave me good tips to follow thank you for the help!!!
Best of luck!
Me too 😭
Breathes in very hard 😮💨
Thank you sir for taking your time to make this video this was very helpful 🫠
Glad it was helpful!
nice u gave all the formulas ily
Happy to help, thanks for the comment
I have science finals tomorrow. Thank you for helping me relearn!
Best of luck!
thanks. i needed to figure this out in a pinch for physics. great job
Glad it helped!
Thank you for this, this is so helpful and easy to understand. 💖💖
You are very welcome!
Thank you! It helped me a lot teacher.
You're welcome. Glad to hear that!
Thank you so much for teaching me and sharing this video! yay :D
You are so welcome! Glad you liked the video.
@@stepbystepscience you helped me to solve my science and math problems. :D
how did u get 25 m/s at the last example? i thought we multiply 140 by 2 then divided by 0.45
45÷28000=512.2
sorry if im wrong but pls help me
280 divided by 0.45 is 622.222... It is close to 625 which is the square of 25. When you take the root of it you would get 25
@@sa_0515 thanks I was confused as well.
thank you so much sir for this explanation
You are most welcome, all the best.
Thanku so much it helped me a lot ❤️❣️
Glad it helped, you're very welcome!
@@stepbystepscience hi
Thank you really you make it easy
So glad you think so, thanks!
Good explanation
Thanks for commenting and you are welcome.
How do you know you are to divide the K.E
at the second example
Do you mean for the girl and bicycle problem? And I am not sure what you mean by, "divide the KE". But you want to solve for the mass and it is v^2 times the mass, so to get the mass to the other side you have to divide both sides by the v^2. Does that help?
Do you mean the girl and bicycle problem? And I am not quite sure what you mean by "divide the KE". But you want to solve for the mass and the mass is multiplied times the v^2 so you have to divide both sides by the v^2. Does that help?
Thank you for helping me
It's my pleasure, thanks for watching!
thank you very much. very helpful..
Glad it helped!
Thank you for everything
Any time, thanks for watching!
Umm ..I don't understand what to use to get 120.000J ?
Is it division or multiplication?
It is 0.5 x 600 x 20 x 20 =120 000 J
Thank you, was very clear
Glad it helped! You're welcome!
You are very clear thank you so much
You’re welcome, glad the video was helpful.
Thanks! Great video!
You're welcome! Glad you liked it.
Thank you for this!
how did you get the last answer??
I explained it right in the video
Very helpful
Glad to hear that, thanks!
Why did u remove the 1 byt2?
You did a great job to explain it's just i have a hard time understanding
I hope the video and example problems help.
Show your work step by step. So it's understandable
I did, that is why the channel is called Step by Step Science.
Thanks, I'm here at 2022 and tryna understand this topic for my physics quiz.
Good luck on the quiz!
Excellent video,thank you very much.
So nice of you, you're welcome!
Very well explanation.This helps me a lot.
Glad it helped.
Is ½ similar to 0.5?
That is a great question and yes they are the same thing.
This really helped me thank you appreciate it sure wish there was someway you could click into the homeschool sites. You explained it so easy.
You are so welcome!
How do I know how much energy a joule is? If you say a joule is like a refrigerator sitting on ur head then I can grasp this.
Here is a video that explains it: ua-cam.com/video/BYpZSdSEk4A/v-deo.html
I hope that it's helpful.
How did you get 44kg mass ?
Thank you so much this helped me a lot...
*Sorry for the Gramma
You're welcome. Glad it helped!
Kinetic energy is the energy that can do work not just the energy of motion that is Mv squared force regards Graham Flowers
Yup, that's right
Thanks 💪🏻💪🏻💪🏻💪🏻😘
Welcome!!
I have a test tmr, atleast ik i wont fail :)
That's great to hear. Good luck!
how did it become 120, 000 j? I'm confused can somebody explain it to me :((
The problem was
KE = 0.5 (600kg) (20m/s)^2
First do the (20m/s)^2 so that would be 20 times 20 and that is equal to 400.
So now we have this...
KE = 0.5 (600kg) (400m/s)
Now multiply the mass and velocity...
600kg multiplied by 400m/s is equal to 240,000
So now we have this...
KE = 0.5 (240,000)
Then multiply 240,000 to 0.5, that is equal to 120,000 J
So the KE = 120,000 J
Always remember to put the unit J that stands for joules when finding the Kinetic Energy.
Thanks for helping out!
Subscribed..
Awesome!
It's well explained thanks very much...
You are very welcome and thank you for commenting.
@@stepbystepscience hello how did you get 25 m/s?
Thanks for making this video it helped me
Glad it helped and thanks for commenting.
Thank you so much for the video 🙏
My pleasure 😊
Wind turbine blade with a kinetic energy of 104040J, turning at 6m/s.
uh how it became 120,000J?
read one of the comments, there is a reply explaining the whole thing.
It has a power 2 up
0.5 X 600 X 40 raise to 2 and then its 120,000J or 0.5 (600) (40) raise to 2 and its just the same 120,000J
Answer 120.000 J this is correct or no
Thank you for making this just actually really helped
That's wonderful, you're very welcome!
How u get 120000 for 20 squared
0.5 x 600 x 20 x 20 = 120 000, just like that. Does that answer your question?
@@stepbystepscience ye idk what grade i got yet
There is no kinetic energy in a moving mass there is force Mv squared kinetic energy is the energy of consistent work from a consistent force regards Graham Flowers
Thanks a lot.I have a suggestion that can you speak a little clearly.
I will try my best
Thanks a lot!
Being forced to watch this for physics rn
lucky you!
Last question answer wrong sir
What is wrong with it?
i don't understand
pls when you are talking take your time😢😢
Ok, will try!
who is grade 6 here ? lol my teacher doesnt even explain this nice
Ok ill be the stupid person. You say energy is 120,000 joules. This means nothing to me. Explain how I can relate that to real world to understand? Like if you day thats a stove sitting on your hand... that’s how it feels.... then i have some understanding of how much energy that is. I know I should know more but U don’t. 😁
Very good question,
From PE =mgh
If you carry a 100 kg mass up a height of 120 meters you will do 120,000 J of work.
Does that help?
Here are some other examples:
The amount of energy one utilizes in lifting a cup of water from the table to one's mouth equals approximately 1 Joule.
One "dietary Calorie" is 4186 J (4.186 kJ).
One gram of gasoline releases about 50 kJ on combustion in air.
A small car (about 1200 kg) travelling at 65 miles per hour (105 km/h) has a kinetic energy of 1 megajoule (1 MJ).
One "kilowatt-hour" is 3.6 MJ.
One ton of TNT releases 4.184 GJ on exploding.
Repent for your sins and believe in the Lord Jesus now he is coming
OK, but we need his mass and velocity to calculate his kinetic energy.
@@stepbystepscience nonsense? 😂
Ok
I thought 12,000
maybe
Is ½ similar to 0.5?
It is the same thing, they are both one half.