Momentum - Force and Laws of Motion | Class 9 Physics
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✅ In this video,
✔️ Class: 9
✔️ Subject: Physics
✔️ Chapter: Force and Laws of Motion
✔️ Topic Name: Momentum
===============================================
00:00 Physics Introduction: Force and Laws of Motion
00:06 Momentum
12:13 Question & Solution: Momentum: Physics
21:11 Website Overview
===============================================
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Momentum
F ∝ V
F ∝ m
F ∝ m x V
Both the quantities are required for the force to be applied.
F ∝ P (momentum)
Momentum:
Momentum is defined of a body as the product of its mass and velocity.
It is a vector quantity
SI unit = kg.ms-1
Question. What is the p of a man of mass 75 kg when he walks with a uniform velocity of 2 m/s.
Question. An object’s momentum is 80 kg m/s and its mass is 16000 G. Find the velocity of the object.
Solution. p = 80 kg m/s
m = 16000gm = 16 kg
p = mv
80 = 16 x v
v = 80/16
Question. Calculate the momentum of the following
An elephant of mass 2000 kg moving at 5 m/s.
A bullet of mass 0.02 kg moving at 400 m/s.
Question. What is the change in momentum of a car weighing 1500 kg when its speed increases from 36 km/hr to 72 km/hr uniformly. .
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Previous Video: Inertia - Force and Laws of Motion kzfaq.info/get/bejne/qdSKldeE09feeok.html Next Video: Newton’s Second Law of Motion - Force and Laws of Motion kzfaq.info/get/bejne/irxkhquisZmncWw.html
@abhikumar296 3 жыл бұрын
In last numerical I think speed should be velocity. Please reply
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@Nageem602 3 жыл бұрын
You mad lady Force is not proportional to velocity
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@casioplayer3206 3 жыл бұрын
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@Nageem602 3 жыл бұрын
Abe sale ye galat para rahi hae force is not proportional to velocity..........
@rudrarajsharma11 3 жыл бұрын
@@Nageem602 no force is directly propotional to velocity mam is saying crrct , study prprly🥱
@nirajtiwari2749 2 жыл бұрын
@@Nageem602 force is proportional to mass
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@manishsingh-uj2wb Жыл бұрын
Does force is also directly proportional to inertia as if an object have greater inertia then greater force is required to change its state ??
@nidhisinghrana5414 Жыл бұрын
Mam I have a problem that velocity is depend on force or force is depend on velocity which is correct. Because when we apply less force than the velocity of an object is is less and when we apply higher Force of an object than its velocity is increases so which is correct...I hope velocity of an object is depend on force velocity is the directly proportional to force
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Mam i have a question that if we are putting same force on the ball from our hand ✋️ and 🎾 tennis racket then which one will have more velocity ?
@vrseducationsaharnpur8340 Жыл бұрын
Equal
@haikyuuu-xo Жыл бұрын
Since force is directly proportional to velocity also so it becomes equal
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Mam force bhi to velocity se directly proportional hai na kyuki agar force badega to velocity bhi badegi na🤔🤔
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First of all we have to convert the intial velocity (km/h) to m/s . similarly final velocity also changed into m/s .... Then You can solve the problem...
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Assalamualaikum ma'am ap me is Jo through ball wali e.g di ha us ma agr koi through ball player ball ko through kare ga to kia wo tennis se through karne wale player jitni power laga Saka??
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@riddhimababbar Жыл бұрын
What would be the difference between inertia of motion and momentum
@soniabansal2799 3 жыл бұрын
F propertional to m÷v In this if we take m= 0 Ans will be 0 Then can we write a f propertional m÷v Failure of newton law ?
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@prachisingla9950 2 жыл бұрын
But if we take v=0, it will go to infinity ♾️
@tannumawa741 3 жыл бұрын
15:09
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Hlo
@studygk5611 3 жыл бұрын
We are multiplying both the proportionality ..Can we satisfied it for any numerical value.???
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Mam momentum mai humne sirf mass ko hi zero kyu kiya velocity ko zero kyu nhi kiya
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Smart board
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@bhagyalakshmirao4413 3 жыл бұрын
5/18 se multiply kyun karthe hain
@rekhagupta7145 3 жыл бұрын
si unit of km/hour
@ajeetpandey3210 3 жыл бұрын
No
@SanjayKumar-tt2kt 3 жыл бұрын
Km/hr ko m/s change karne ke liye 5 by 18 multiply karte h
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@@SanjayKumar-tt2kt ha ye to video me bataya gya h
@randhirsharma3632 3 жыл бұрын
1km =1000m , 1 h =3600 second To concert km/h into m/ sec we multiple 1000/3600 ( 5/18)
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@punam134 3 жыл бұрын
Thank you mam for helping 😍🥰😘🙏
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I have cleared my all doubts thank you mam
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Mujhe pahle pata chalta ki itna achha samjhaya ja raha hay To main top karta. Ab main sadi karunga apna bachha ko is videos dekhake brilent banawonga
@ishan6174 3 жыл бұрын
👍
@anushkabhowmik7843 3 жыл бұрын
Ma'am can we write 10kgm/s instead of writing 10kgms-¹?
@dilipkumarprasad.1281 3 жыл бұрын
Yes
@exploringinterest3760 3 жыл бұрын
yes becoz it means the same
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Yup.... This is same.... 😉
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U are a army
@pragatisolanki5462 3 жыл бұрын
Mam hmne velocity hi kyu li ? Speed kyu nahi
@ManishKumar-pm2wg 3 жыл бұрын
because ,it is in particular direction.
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Thank you ma'am for this
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Mam, thanks for this lecture you helps us a lot thank you very much mam. ☺☺
@Fahimmustaq Жыл бұрын
Mam ur explaination is very much good all the concept we can understood easily❤
@MagnetBrainsEducation Жыл бұрын
Thank you for enjoying our videos and finding them helpful in understanding the concepts. We're glad we could be of assistance and make learning fun for you.
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No this is not best
@user-rj9kk6iu3l 3 жыл бұрын
The best teacher ever on youtube ,thanks a lot mam
@MagnetBrainsEducation 3 жыл бұрын
Raja kumar, Thanks for being active on the channel. Do recommend us to your friends.
@User20992 2 жыл бұрын
Ma'am one dought how km/he changed in m/s
@RajeshKumar-sx1dk 3 жыл бұрын
Thanks mam bhut hi achhe tarike se pdhaya h aapne
@Piyush-00027 3 жыл бұрын
Mam ur teaching help us a lot thank you
@k-popfan7210 2 жыл бұрын
Im So Lucky To Find Magnet Brains my bestfreind suggested me and yes its so good😌😌
@dambarudharputhal5990 3 жыл бұрын
Mam i have doubt in conversion so please help me
@mahmoodjamal1988 Жыл бұрын
At 9:00 if velocity becomes 0 then mass will also become 0 so how is it possible of being mass 0 due to velocity?? Mam please explain 🙏🏻🙏🏻🙏🏻
@MagnetBrainsEducation Жыл бұрын
Thank you for your comment! We're glad you're enjoying our videos. The velocity of an object can be 0 while the mass of the object remains unchanged. We hope you continue to enjoy our videos!
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