CBSE > Class 11 > Physics | CBSE Board | Homework Help

In perfectly inelastic collision,momentum is conserved i.e. (final momentum is equal to the initial momentum. ), But kinetic energy is not conserved (final kinetic energy is less than the initial kinetic energy.), and the bodies stick together after collision and start moving with same velocity.

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Shivam Dangi 6 years, 3 months ago

Collision in which momentum remain conserved but kinetic energy do not remain conserve is called pure inelastic collision

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Average velocity

Posted by Abhishek Sando 6 years, 3 months ago

CBSE > Class 11 > Physics

1 answers

The Hammer 6 years, 3 months ago

The average velocity of an object is its total displacement divided by the total time taken

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A batsman hits back a ball straight in the direction of the bowler without changing its initial speed of 12m/s. If the mass of the ball is 0.15kg, determine the impulse imparted to the ball.

Posted by Xjcj Xhcj 6 years, 3 months ago

CBSE > Class 11 > Physics

2 answers

Raina Ahlawat 6 years, 3 months ago

Here u=12m/sec V= -12m/sec M= 0.15kg J= m(v-u) =0.15(-12-12) = -3.6 N sec

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Sia ? 6 years, 3 months ago

Impulse = change in linear momentum .
initial momentum of ball= mu
=0.15 {tex}\times{/tex}12 =1.8 kg.m/sec

final momentum of ball = -mu
= - 0.15 {tex}\times{/tex} 12 = -1.8 kgm/sec

now,
change in momentum of ball =final -initial
= -1.8 -1.8 = -3.6 kgm/sec
so,
change in momentum of bat = -change in momentum of ball
change in momentum of bat =3.6 kgm/s
now,
impulse imparted to ball =change in momentum of bat = 3.6 kgm/s

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screw gauge diagram

Posted by Hritik Negi 6 years, 3 months ago

CBSE > Class 11 > Physics

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A rain drop of radius 2mm falls from height of 500m above the ground. It falls with decreasing acceleration until at half its original height. It attains its maximum speed and moves with uniform speed. What is the work done by the gravitational force on th rain drop in the first and second half of its journey.what is the work done by the resistive force in the entire journey if it's speed on reaching the ground is 10m/s

Posted by Arima Singh 6 years, 3 months ago

CBSE > Class 11 > Physics

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In the figure shown initially spring is in unstertched state and blocks are rest. Now 100N force is applied on block A and B as shown in figure. After some time velocity of A becomes 2m/s and that B 4m/s and block A displaced by amount 10 cm.Then work done by spring force on A will be ( K=100N/m , m1=2kg ,m2=1kg)

Posted by Girish Ml 6 years, 3 months ago

CBSE > Class 11 > Physics

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Angle at which horizontal range is maximum?

Posted by Akash Biswas 6 years, 3 months ago

CBSE > Class 11 > Physics

1 answers

Mehnga Singh 6 years, 3 months ago

45°

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Dimension formula of surface tension

Posted by Lalit Moghe 6 years, 3 months ago

CBSE > Class 11 > Physics

3 answers

Tanashri Wagh 6 years, 3 months ago

MT-2

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Shubham Chanana 6 years, 3 months ago

MT-2

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Bhawna Sangwan 6 years, 3 months ago

MT-2

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What is FRICTION ❓

Posted by Jainish Patel 6 years, 3 months ago

CBSE > Class 11 > Physics

1 answers

Abhinav Yadav 6 years, 3 months ago

The force which acts between two bodies while one body is in motion is known as friction

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Short tricks for projectile motion

Posted by Anamika Awasthi 6 years, 3 months ago

CBSE > Class 11 > Physics

1 answers

Shivam Dangi 6 years, 3 months ago

For which topic

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Definition circular motion

Posted by Vivek Mer 6 years, 3 months ago

CBSE > Class 11 > Physics

1 answers

Gaurav Seth 6 years, 3 months ago

Uniform Circular Motion

This motion refers to the circular motion if the magnitude of the velocity of the particle in circular motion remains constant. The non-uniform circular motion refers to the circular motion when the magnitude of the velocity of the object is not constant. Another special kind of circular motion is when an object rotates around itself also known by spinning motion.

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What is wark

Posted by Sona Miri 6 years, 3 months ago

CBSE > Class 11 > Physics

3 answers

Tanashri Wagh 6 years, 3 months ago

Force acting on a body displaces it in the direction of force. Also define as the product of force and displacement Scalar quantity

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Hk Suman 6 years, 3 months ago

Work is defined as the product of component of force in the direction of the displacement and the displacement

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Tushar Joshi 6 years, 3 months ago

Froce ×displacement(f×s)

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Ncrt example 5.9

Posted by Aashi Manju 6 years, 3 months ago

CBSE > Class 11 > Physics

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How to score better in physics

Posted by Ayush Negi 6 years, 3 months ago

CBSE > Class 11 > Physics

1 answers

Sudhakar???? Bisht 6 years, 3 months ago

By learning books and notebooks.??

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What are the to score better in physics

Posted by Ayush Negi 6 years, 3 months ago

CBSE > Class 11 > Physics

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Why the body of human havey in night and less in day

Posted by Adarsh Verma 6 years, 3 months ago

CBSE > Class 11 > Physics

0 answers

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Why Young's modulus and shear modulus are relavent only for solids?

Posted by Nivetha Nive 6 years, 3 months ago

CBSE > Class 11 > Physics

0 answers

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What is light? Solid,liqiud, gass

Posted by Vivek Verma 6 years, 3 months ago

CBSE > Class 11 > Physics

1 answers

Anshul Sharma 6 years, 3 months ago

gas

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How is the division of marks among chapter and questions has been done

Posted by Hk Thakur 6 years, 3 months ago

CBSE > Class 11 > Physics

0 answers

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Angular average velocity

Posted by Shivani Shalu 6 years, 3 months ago

CBSE > Class 11 > Physics

1 answers

Shubhnesh Yadav Yadav 6 years, 3 months ago

Change in w where w is omega

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What is law of conservation of momentum

Posted by Arpit Pachauri 6 years, 3 months ago

CBSE > Class 11 > Physics

2 answers

Shubhnesh Yadav Yadav 6 years, 3 months ago

When external forces applied on a body becomes zero than momentum of the body will be constant or conserved .. Fex=0.... By twinkle

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Ayush Negi 6 years, 3 months ago

Momentum is conserved before and after collision

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At 4 degree Celsius ,the density of water is equal to

Posted by Dhinesh Kumar 6 years, 3 months ago

CBSE > Class 11 > Physics

3 answers

Gopal Karamkar 6 years, 3 months ago

1g/cm^3

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Aastha Tiwari 6 years, 3 months ago

Water has its maximum density of 1g/cm3 at 4 degrees Celsius. When the temperature changes from either greater or less than 4 degrees, the density will become less then 1 g/cm3. Water has the maximum density of 1 g/cm3 only when it is pure water.

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Manmeet Singh 6 years, 3 months ago

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A body covers a distance of 15m in the 5th second and 20m in the 7th second.How much it will cover in the 12th second.

Posted by Devendra Pratap Singh 6 years, 3 months ago

CBSE > Class 11 > Physics

1 answers

Ravi Kumar 6 years, 3 months ago

35m

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Each side of cube is measured to be 7.203m what are the total surface area and the volume of the cube to appropriate significant figure

Posted by Deepak Chaudhary 6 years, 3 months ago

CBSE > Class 11 > Physics

0 answers

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Strongest force in nature

Posted by Devanshi Pandey 6 years, 3 months ago

CBSE > Class 11 > Physics

5 answers

Shubhnesh Yadav Yadav 6 years, 3 months ago

Nuclear force gravitational is the weakest force. By twinkle

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Atika Thakur 6 years, 3 months ago

afaxwgsxxxsiscwia

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Arpit Pachauri 6 years, 3 months ago

Gravitational force

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Aastha Tiwari 6 years, 3 months ago

Gravitational Force is strongest in nature. There are two reasons for this: 1) gravity has a long range, and 2) there is no such thing as negative mass.

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Parneet Kaur Jot Mangat 6 years, 3 months ago

Strongest force is nuclear force having strength of 10^38

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