CBSE > Class 09 | CBSE Board | Homework Help

(First draw the diagram. Here the link to it below) https://pin.it/1fSSKZa AO= u (initial velocity) BC= v (finial velocity) CO= t (time) BD= BC-DC = v-u S= area under the graph (which is the trapezium AOCB or the Rectangle AOCD + ∆ABD) (Area of rectangle is L x B and area of triangle is 1/2 x base x height) S= area of rectangle AOCD + area of ∆ABD S= OA x OC + 1/2 x t x v-u S= u x t + 1/2 x t x (v-u) (From equation 1- v=u + at v-u=at) Put the value of (v-u) from equation 1. S= ut+1/2 x t x at S= ut+1/2 x at² S=ut + 1/2 at² Hence, proved

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Exercise 14.2 solution

Posted by Xx Choudhary 4 years, 7 months ago

CBSE > Class 09 > Mathematics

2 answers

Sarfaraj Ahmed 4 years, 7 months ago

The blood groups of 30 students of class 8 are recorded as following

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Sarfaraj Ahmed 4 years, 7 months ago

The blood of 30 students of class VIII are recorded as follows

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What would happen if the plasma membrane ruptures or break down?

Posted by Adarsh Kumar 4 years, 7 months ago

CBSE > Class 09 > Science

2 answers

Pra Jit 4 years, 7 months ago

If the plasma membrane reptures or breaks down then molecules outside the cell can easily pass in and out also the cell organelles will move out of the cell and the cell will be destroyed.

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Rohini Prajapati ..... 🤪 4 years, 7 months ago

If the plasma membrane ruptures or break down the cell will not be able to exchange material from its surrounding by diffusion or osmosis.

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Leaders keep changing in the democracy. This leads to instability In the light of this statement analyse arguments against democracy

Posted by Garvit Nijhawan 4 years, 7 months ago

CBSE > Class 09 > Social Science

1 answers

Samagya Pyne 4 years, 7 months ago

It's a true democracy

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Explain the term of Circulation

Posted by Unnati Nandani 4 years, 7 months ago

CBSE > Class 09 > Social Science

1 answers

Chaithanya Kumar 8Th Class 4 years, 7 months ago

The movement of any substance in a definite closed path is called circulation eg:blood circulation in blood vessels

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Happy independence day

Posted by Sanket ... 4 years, 7 months ago

CBSE > Class 09 > Other Subjects

1 answers

Diksha Laniya🐥 4 years, 7 months ago

Same to you

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Give an example of I. Clear communication 2. Complete communication

Posted by Rohit Singh 4 years, 7 months ago

CBSE > Class 09 > Information Technology (402)

0 answers

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Grandfather was a great animal lover discuss ?

Posted by Sunil Patri 4 years, 7 months ago

CBSE > Class 09 > English Lang & Lit. (184)

3 answers

Pra Jit 4 years, 7 months ago

He was an animal lover and had a private zoo...

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Mayank Rawandhe 4 years, 7 months ago

Because he had too many animals.

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Samagya Pyne 4 years, 7 months ago

Discuss , grandfather was a great animal lover.

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What is reason behind opening and closing of stomata?

Posted by Qwerty.. ...... 4 years, 7 months ago

CBSE > Class 09 > Science

2 answers

Chaithanya Kumar 8Th Class 4 years, 7 months ago

The reason of opening and closing of stomata is for transpiration and exchange of gases

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Aysha Meer 4 years, 7 months ago

Dftgggg

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1) Differentiate between Eukaryotic and prokaryotic cells? 2) Differentiate between Animal cell and plant cell?

Posted by Abhaynoor Singh Pannu 4 years, 7 months ago

CBSE > Class 09 > Science

1 answers

Piyush Technical World 4 years, 7 months ago

Comparing prokaryotes and eukaryotes The primary distinction between these two types of organisms is that eukaryotic cells have a membrane-bound nucleus and prokaryotic cells do not. ... In prokaryotes, DNA is bundled together in the nucleoid region, but it is not stored within a membrane-bound nucleus.

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What is mail merge? Write down the steps to create maiting tables to paste on wedding card?

Posted by Salina Mahaldar 4 years, 7 months ago

CBSE > Class 09 > Information Technology (402)

1 answers

Chandra Mohan Choudhary 4 years, 7 months ago

Xhx

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What characteristics does he say he inherited from his parents

Posted by Meenakshi Banskar 4 years, 7 months ago

CBSE > Class 09 > English Lang & Lit. (184)

0 answers

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Why does the Happy Prince send a ruby for the seamstress? What does the swallow do in the seamstress’ house?

Posted by Vanshika Agarwal 4 years, 7 months ago

CBSE > Class 09 > English Lang & Lit. (184)

1 answers

Pra Jit 4 years, 7 months ago

Because the seamstress was poor and her son was down with fever, he was asking for oranges but she couldn't give it as there is nothing to to eat except the water so the Prince commanded the swallow to take the Ruby from his sword and give it to the seamstress and the swallow did what the Prince said.

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Find the angle between vector:- p=2i+3i-2k q=3i+2j+4k

Posted by Shreya Rajshree 4 years, 7 months ago

CBSE > Class 09 > Science

2 answers

Pranay R 4 years, 6 months ago

cos-1-3/28

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Piyush Technical World 4 years, 7 months ago

cos−1 √3/28

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Jumble word

Posted by Piyush Sharma 4 years, 7 months ago

CBSE > Class 09 > English Lang & Lit. (184)

0 answers

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Hey guys Please ans What is your favorite KPOP grp My is BANGTANG SONYENDAN

Posted by Rama Kedia 4 years, 7 months ago

CBSE > Class 09 > Information Technology (402)

1 answers

Prachi Zanwar 4 years, 7 months ago

My too BTS (Bangtan Sonyeondan) I purple you??

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Is force needed to keep a moving body in motion

Posted by Md Zahid 4 years, 7 months ago

CBSE > Class 09 > Science

3 answers

Pra Jit 4 years, 7 months ago

Yes

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Trisha Verma 4 years, 7 months ago

It depends on the situation . When there is no opposition force (friction , air resistance etc.) It will remain in a state of rest or in uniform linear motion .

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Abhaynoor Singh Pannu 4 years, 7 months ago

May be

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Discuss the various cropping pattern

Posted by Aditya Kumar 4 years, 7 months ago

CBSE > Class 09 > Science

2 answers

Naman Agrawal 4 years, 7 months ago

There are three types of cropping pattern :- 1 Mixed Cropping 2 Inter Cropping 3 Crooping patern

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Ishita Gupta 4 years, 7 months ago

Cropping pattern refers to proportion of area under different crops at different points of time. It also indicates the time and spatial arrangement or sequence of crops and / or fallow in a particular land area. If these are two crops, its called double cropping.

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Please provide IT video & notes

Posted by Tajit Nalo 4 years, 7 months ago

CBSE > Class 09 > Information Technology (402)