What do you think video is but fast frame by frame?
11 หลายเดือนก่อน +3
One very interesting questing that is here answered is how much time the ball and the strings are in contact, I counted around 18 frames which translates to approx 3 ms. This time depends on many factors: string tension, kinetic energy (velocity of racket and ball), point of contact (distance from sweet point) but also racket acceleration which increases it.
420ayylmaoit I know, right. The time I heard that elephants were actually bigger than human beings just blew me away. I have seen pictures of elephants in the internet and I mean how can so big things fit into a monitor?
The ball does not return to its original shape at once. It oscillates between two ellipsoidal shapes (with the major axis vertical and then horizontal) and then becomes a sphere as the elastic energy dissipates due to friction.
At no point did I say it returned to its original shape, at once. I just said how quickly it will return eventually resume its original shape is cool .
@@mythbusterman8541 , you are right. I just wanted to emphasize, for those who may be curious, how collisions look like in slow motion. The oscillations between kinetic energy and elastic energy are something we don't get to see when we throw random stuff at each other. This video is a beautiful example to show how all collisions involve oscillations. For anyone who remembers the movie gravity, collisions in space are a major pain, because oscillations never stop due to absence of friction and things seem to bounce around forever. Even drops of soup in a spoon keep wiggling like Jello.
When you convert the video to youtube-format are all frames saved? That is: Is the framerate still 6000fps? To me it seems like the time of the serve is 20 frames, which is only 3,3ms.If the ball weighs 57grams and we assume the force to be constant the racket exerts a force of 1,1kN...That IS a lot. :-)
Actually, this video is 1fps, as you can clearly see. It was recorded 6000fps, and played back 1fps, so it is slowed down 6000x times. Thw whole concept of slow motion is that the recording fps and the playback fps is different (latter is smaller). If they were the same, you would see realtime motion.
An amount of spin (rpm) mostly defined through angle between a velocity vector of a racquet and a perpendicular to a string bed plane. The Slippery strings can help also.
So I wonder why "follow-through" is so stressed with young tennis players, when only .003 seconds that the racket makes contact with the ball matter for the ball's direction. I guess a follow through motion is the most efficient way to generate the necessary power.
That extra inertia can be used to help reposition the body for the next step or shot. Another reason is to slow down the racket more slowly and reduce stress on the body.
maladidanart 228 km/u divided by 360, then times 1000 gives you 63,33 m/s = 6333cm/s It's 6000 frames/s so 6333/6000= 1,5cm/frame Tennisball is roughly 7cm, so in 4 frames the tennisball has travelled its own diameter. Even the super slo mo speed of 6000 frames/sec were not enough to film this tennisball super slow in a fluid motion. They should have filmed with more fps.. Or the server should have hit less hard hehe
@@Nithralas Wrt title speed of 142mph =228kph: then: v / (f/s) =(cm/s) / (f/s) =6333/6000 =1.06cm/frame [ not 1.5cm/frame ] {I suppose this is @ the max velocity (as it accelerates from 0 during the clip)} Ave speed over 1st 0.402m: v=m/s =(5.ball.diameters*0.067m) / (48f / 6000f/s) =50.25m/s =181km/h? Thus ball is moving @ ave 0.8cm/frame: v / (f/s) =(cm/s) / (f/s) =(181000/3600*100 /6000) =0.8cm/f .
Okay, I pull up, hop out at the after party You and all your friends, yeah, they love to get naughty Sippin' on that Henn', I know you love that Bacardi (Sonny Digital) 1942, I take you back in that 'Rari Okay, I pull up, hop out at the after party You and all your friends, yeah, they love to get naughty Sippin' on that Henn', I know you love that Bacardi 1942, I take you back in that 'Rari Switchin' lanes and I'm seein' lights, you know I watch the curb Smokin' weed, you know I'm gettin' high, you know it calm my nerves Trappin' hard, pumpin' non-stop, the bag I had to earn You can try, but you might fail again, you know you never learn Came in with a bottle, I was trippin' And I took a couple shots and now I'm dizzy It got me burning up, burning up Insides burning up, burning up (Yeah) Okay, I pull up, hop out at the after party You and all your friends, yeah, they love to get naughty Sippin' on that Henn', I know you love that Bacardi 1942, I take you back in that 'Rari Okay, I pull up, hop out at the after party You and all your friends, yeah, they love to get naughty Sippin' on that Henn', I know you love that Bacardi 1942, I take you back in that 'Rari Uh, poppin' meds (Uh), out in the meadows (Yeah) She like a little red (Uh), in her stilettos (Yeah) Anytime you live (Uh), out in the ghetto (Yeah) You try to duck the feds (Uh), they need to let go Came in with a bottle, I was trippin' And I took a couple shots, it got me dizzy It got me burning up, burning up Insides burning up, burning up (Yeah) Okay, I pull up, hop out at the after party You and all your friends, yeah, they love to get naughty Sippin' on that Henn', I know you love that Bacardi 1942, I take you back in that 'Rari Okay, I pull up, hop out at the after party You and all your friends, yeah, they love to get naughty Sippin' on that Henn', I know you love that Bacardi 1942, I take you back in that 'Rari Okay, I pull up (Okay, I pull up) Okay, I pull up (Okay, I pull up) Okay, I pull up (Okay, I pull up), hop out at the after party Okay, I pull up (Okay, I pull up), hop out at the after party Okay, I pull up (Okay, I pull up), hop out at the after party Okay, I pull up (Okay, I pull up), hop out at the after party
What are you talking about...HAHHAHA in tennis it can go a lot faster than that. I think (don't quote me) but the fastest serve ever recorded is 175mph...
I dont think this is the real dead, I can't really imagine a real new ball getting all out of shape like this, and the serve seems to be missing a pronation so it's hardly a 140 mph serve
How many people almost left the video because it was going tooo slow, but kept watching because you didn't want to miss the climax
Me
Climax 😏
5 STAR VIDEO Great job unravels the secret of super serves for those who see beyond phenomenon
Amazing how the strings don't break, and not on the sweet spot.
They are tough
That is the sweet spot. The sweet spot isnt the middle of the string pattern its slightly above it.
For serve the sweet spot is slightly higher.. Probably first serve, max use of the centrifugal force
The beginning WAS in good, super slow motion. The rest is "frame by frame". What more do you want?
What do you think video is but fast frame by frame?
One very interesting questing that is here answered is how much time the ball and the strings are in contact, I counted around 18 frames which translates to approx 3 ms. This time depends on many factors: string tension, kinetic energy (velocity of racket and ball), point of contact (distance from sweet point) but also racket acceleration which increases it.
wow! beautiful, changed my life!
420ayylmaoit it doesn't take a lot then
420ayylmaoit I know, right. The time I heard that elephants were actually bigger than human beings just blew me away. I have seen pictures of elephants in the internet and I mean how can so big things fit into a monitor?
What an inspiration for humanity
Amazing! Thanks.
Class it’s amax how quickly the ball will return to it’s original shape
The ball does not return to its original shape at once. It oscillates between two ellipsoidal shapes (with the major axis vertical and then horizontal) and then becomes a sphere as the elastic energy dissipates due to friction.
At no point did I say it returned to its original shape, at once.
I just said how quickly it will return eventually resume its original shape is cool .
@@mythbusterman8541 , you are right. I just wanted to emphasize, for those who may be curious, how collisions look like in slow motion. The oscillations between kinetic energy and elastic energy are something we don't get to see when we throw random stuff at each other. This video is a beautiful example to show how all collisions involve oscillations. For anyone who remembers the movie gravity, collisions in space are a major pain, because oscillations never stop due to absence of friction and things seem to bounce around forever. Even drops of soup in a spoon keep wiggling like Jello.
WHAT DID THAT BALL EVER DO TO YOU!?!
John Doe it got what it de-served
Mattyrdom omg so bad I love it xD
Best reply ever!
Amazing
*_"SQUASH N' STRETCH, BABY..!!!!"_*
je suis maladeeeeeeeee, complètement maladeeeeee
If you are impatient like me. watch the first 2 seconds in .5 speed and the last of it in x2 speed.
great tip, thanks! :) must more pleasurable to watch :D
Too much work for a 1 minute video
🤦
Still 2X Sucks !
Definitely going to show this to my pupils tomorrow in physics class. Amazing!
My Face: ._.
My mind: BRUHHHHHHHHHHHH
Could u pls play some Nicki Minaj in the background
When you convert the video to youtube-format are all frames saved? That is: Is the framerate still 6000fps? To me it seems like the time of the serve is 20 frames, which is only 3,3ms.If the ball weighs 57grams and we assume the force to be constant the racket exerts a force of 1,1kN...That IS a lot. :-)
You and TH-cam are doing great!!! Frame rate is still 6000fps.
madmdnk Just the film is 6000 fps. The video is ~50-100 fps :)
+Swyse Official the video is 25 or 29 fps like all the videos u upload
Actually, this video is 1fps, as you can clearly see. It was recorded 6000fps, and played back 1fps, so it is slowed down 6000x times. Thw whole concept of slow motion is that the recording fps and the playback fps is different (latter is smaller). If they were the same, you would see realtime motion.
F=m.a =m.v/t =.058*(226000/3600) /.0033 =1.1kN {using 20 frames duration, 58g.ball}
W=N.m =1100*1,5.ball.diameters*0.067m =112 J
P=W/s =112/.0033 =34W ?
Great example of collision
Are the strings creating the spin too or the brushing of the ball?
An amount of spin (rpm) mostly defined through angle between
a velocity vector of a racquet and a perpendicular to a string bed plane. The Slippery
strings can help also.
So I wonder why "follow-through" is so stressed with young tennis players, when only .003 seconds that the racket makes contact with the ball matter for the ball's direction. I guess a follow through motion is the most efficient way to generate the necessary power.
That extra inertia can be used to help reposition the body for the next step or shot. Another reason is to slow down the racket more slowly and reduce stress on the body.
Do you guys know where we can find the original video, not just a clip.
PS i am a very desperate physics student
3c en force !!!!
Can you tell me how the ball was moving show slow with which app it came
Photoshop
me sirvio grasias
who's Volkl is that?
What sort of sorcery is this???Does the ball actually flatten out and the string bed deflect so little?
1. It is very fast serve.
2. It is flat serve.
3. Contact is near frame.
@@anatolyantipin8718 4. Amanio.
What does the background show?
Clouds.
*looks at wall*
Then *looks back at this video*
😐😂😐😶😧😳😱
Did you see that wiggle?
Stop motion more like
*_tEnNiS bALL tHrOw iT aGaInSt tHe _**_-wALL-_**_ rAcQuEt_*
im here cuz this dude on ig, akennedytennis claims this is him
Yes. It is him!!!
If it's 6000fps, why isn't the footage smooth?
maladidanart 228 km/u divided by 360, then times 1000 gives you 63,33 m/s = 6333cm/s
It's 6000 frames/s so 6333/6000= 1,5cm/frame
Tennisball is roughly 7cm, so in 4 frames the tennisball has travelled its own diameter.
Even the super slo mo speed of 6000 frames/sec were not enough to film this tennisball super slow in a fluid motion. They should have filmed with more fps.. Or the server should have hit less hard hehe
maladidanart It's not. It's fake. All they did was to separate each frame and that gives you the impression of slow motion.
@@Nithralas Wrt title speed of 142mph =228kph: then: v / (f/s) =(cm/s) / (f/s) =6333/6000 =1.06cm/frame [ not 1.5cm/frame ]
{I suppose this is @ the max velocity (as it accelerates from 0 during the clip)}
Ave speed over 1st 0.402m: v=m/s =(5.ball.diameters*0.067m) / (48f / 6000f/s) =50.25m/s =181km/h?
Thus ball is moving @ ave 0.8cm/frame: v / (f/s) =(cm/s) / (f/s) =(181000/3600*100 /6000) =0.8cm/f
.
142 mph = 228 kilometers per hour
Ok and....
6000 fps! that's gonna make once helluva sonic boom LMAO JK frames not feet.
Okay, I pull up, hop out at the after party
You and all your friends, yeah, they love to get naughty
Sippin' on that Henn', I know you love that Bacardi (Sonny Digital)
1942, I take you back in that 'Rari
Okay, I pull up, hop out at the after party
You and all your friends, yeah, they love to get naughty
Sippin' on that Henn', I know you love that Bacardi
1942, I take you back in that 'Rari
Switchin' lanes and I'm seein' lights, you know I watch the curb
Smokin' weed, you know I'm gettin' high, you know it calm my nerves
Trappin' hard, pumpin' non-stop, the bag I had to earn
You can try, but you might fail again, you know you never learn
Came in with a bottle, I was trippin'
And I took a couple shots and now I'm dizzy
It got me burning up, burning up
Insides burning up, burning up (Yeah)
Okay, I pull up, hop out at the after party
You and all your friends, yeah, they love to get naughty
Sippin' on that Henn', I know you love that Bacardi
1942, I take you back in that 'Rari
Okay, I pull up, hop out at the after party
You and all your friends, yeah, they love to get naughty
Sippin' on that Henn', I know you love that Bacardi
1942, I take you back in that 'Rari
Uh, poppin' meds (Uh), out in the meadows (Yeah)
She like a little red (Uh), in her stilettos (Yeah)
Anytime you live (Uh), out in the ghetto (Yeah)
You try to duck the feds (Uh), they need to let go
Came in with a bottle, I was trippin'
And I took a couple shots, it got me dizzy
It got me burning up, burning up
Insides burning up, burning up (Yeah)
Okay, I pull up, hop out at the after party
You and all your friends, yeah, they love to get naughty
Sippin' on that Henn', I know you love that Bacardi
1942, I take you back in that 'Rari
Okay, I pull up, hop out at the after party
You and all your friends, yeah, they love to get naughty
Sippin' on that Henn', I know you love that Bacardi
1942, I take you back in that 'Rari
Okay, I pull up (Okay, I pull up)
Okay, I pull up (Okay, I pull up)
Okay, I pull up (Okay, I pull up), hop out at the after party
Okay, I pull up (Okay, I pull up), hop out at the after party
Okay, I pull up (Okay, I pull up), hop out at the after party
Okay, I pull up (Okay, I pull up), hop out at the after party
Sheeeeeeeesh 🥵📶🎶
Murray will still return it though.
Светиот moly Тоа би било топка
yo mama
142 mph = 228 kilometers per hour: too fast compared to the serve speed of top pro tennis player.
It is not very reliable flat serve.
The ball is stationery (horizontally), but if it were moving at 78kph + the serve at 150kph the total collision speed would be 228kph ?
This is (almost all) stop motion, not slow motion.
Try again, and focus on a fluid display those first 0:02.
Il y a t'il des français les commentaires
Must be 142km/h not mph... that's impossible....
Andre De Wet Watch tennis then.
Andre De Wet Milos Raonic hit the ball on a serve @ 250 km/h. mmmmh!!
What are you talking about...HAHHAHA in tennis it can go a lot faster than that. I think (don't quote me) but the fastest serve ever recorded is 175mph...
Wrong
I dont think this is the real dead, I can't really imagine a real new ball getting all out of shape like this, and the serve seems to be missing a pronation so it's hardly a 140 mph serve
#8...................Illuminate sign
it's captain tsubasa
lol
i couldnt hear volume
get a phantom, and no need for the frame by frame shit haha
This is the worst slow motion video I've ever seen.
Deo Favente you must've only seen a couple then
the equipment sucks