Momentum - Force and Laws of Motion

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. .
Disclaimer: "This video is for educational and informational purposes only and is not intended to infringe on any copyrights. If you believe that this video has used any copyrighted material in a way that constitutes copyright infringement, please contact us at contact@magnetbrains.com and we will take appropriate action."

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@MagnetBrainsEducation Жыл бұрын

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@krrishraj4159 11 ай бұрын

Yes

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@aarohikumar4438 2 жыл бұрын

😂

@MagnetBrainsEducation 3 жыл бұрын

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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@Nageem602 3 жыл бұрын

Abe sale ye galat para rahi hae force is not proportional to velocity..........

@rudrarajsharma11 3 жыл бұрын

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@nirajtiwari2749 2 жыл бұрын

@@Nageem602 force is proportional to mass

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@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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@MagnetBrainsEducation 3 жыл бұрын

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Sir, I have a question that confuses me. While shooting at the amusement park ranges, sometimes we hit the target, but the target does not fall. We cannot change the mass of the bead we throw and we need to increase its speed. If we press the trigger harder, the speed of the bead coming out of the gun does not change. What should we do to change this speed?

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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.

@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 ??

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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 what is meaning of directly FROPOTIONSL

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Proportional hota hai 😂😂

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We are multiplying both the proportionality ..Can we satisfied it for any numerical value.???

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@hetanshishirokha6805 3 жыл бұрын

Mam force bhi to velocity se directly proportional hai na kyuki agar force badega to velocity bhi badegi na🤔🤔

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15:09

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Thanks for your kind words! We are glad that you find our videos useful and easy to understand. We hope that you will continue to benefit from them.

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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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Last wla questions nhi smj meh aaya

@tashuvamshi4523 3 жыл бұрын

I m tashu ... I understood the last question... First a fall we have to to find the final velocity nd then initaial velocity nd we have to convert the km/hr in to kg/ms nd that it

@bikramkesharirana5409 3 жыл бұрын

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...