HOLIDAY HOMEWORK

SUBJECT – PHYSICS

CLASS - 9

1) Under what condition is the magnitude of average velocity of an object equal to

its average speed?

2) What does odometer of an automobile measure?

3) What can you say about the motion of an object whose displacement- time graph is a

straight line parallel to the time axis?

4) A body thrown in vertically upward direction rises up to a height h and comes back

to the position of start. Calculate the total distance travelled by the body and its

displacement.

5) What is the acceleration of a body moving with uniform velocity?

6) A body can have zero average velocity but not zero average speed. Justify.

7) A train 100m long is moving with a velocity of 60km/h. Find the time it takes to

cross the bridge 1km long.

8) A body covers a semicircle of radius 7cm in 5second. Find its velocity.

9) Anand is moving in his car with a speed of 45km/h. How much distance will he

cover in (i) one minute and (ii) one second?

10) It takes 6 minutes for the signal sent by an artificial satellite orbiting around the earth

to reach the ground station. Calculate the distance of the artificial satellite from the

ground station. The signal travels with the speed of light. (3 x 108m/s).

11) If a cheetah spots his prey at a distance of 100m, what is the minimum time it

will take to get its prey if the average velocity attained by it is 90km/h?

12) Walk from one corner of the basketball court to its diagonally opposite corner

along its sides. If the basketball court has the dimension of 15mx28m.

a. What is the distance covered?

b. What is the displacement?

13) Draw a velocity versus time graph of a stone thrown vertically upwards and then

coming downwards after attaining the maximum height.

14) A cyclist goes around a circular track of diameter 105m in 5minutes. Calculate his

speed and velocity at the end of 7minutes30seconds.

15) A girl drove to a hospital from her home and noted the odometer reading of her car

increased by 12 km. The trip took 18 minutes. (i) What was her average speed?

(ii) If she returned home by the same path 7h30min after she left, what was her

average speed and velocity for the entire trip?

16) An electron moving with the velocity of 5x104 m/s enters into a uniform electric

field and acquires a uniform acceleration of 104m/s2 in the direction of its initial

motion.

i) Calculate the time taken in which the electron would acquire a velocity

double of its initial velocity.

ii) How much distance the electron would cover in this time?

17) Obtain a relation for the distance travelled by an object moving with a

uniform acceleration in the interval between 4th and 5th seconds.

18) A bus starts from rest and moves with a uniform acceleration of 1m/s2 for 5

minutes. Calculate (i) the speed acquired and (ii) the distance travelled by the bus.

19) A train starts from rest and accelerates uniformly at 10m/s2 for 1 minute. Find (i) the

velocity and (ii) the distance travelled by the train at the end of 1 minute.

20) The brakes applied to a car produce an acceleration of 6m/s 2 in the opposite direction

to the motion. If the car takes 2 seconds to stop after the application of brake, calculate

the distance it travels during the time.

ACTIVITY PLAN FOR THE CHAPTER : MOTION

To understand that the displacement of an object is less than the distance travelled by the

object. – A Students will go from one corner of their Living room to the opposite corner by

different routes possible. They will measure the distance travelled with a measuring tape. Now

students will measure the length of diagonal of the living room and note their observations.

They can try same in other rooms also .

Class 9th Hindi Holiday Homework

प्रश्न 1) ननम्न विषयों पर अनुच्छेद लिखिए :-

➢ िड़का िड़की एक समान ➢ मेरे जीिन का िक्ष्य

प्रश्न 2) विज्ञापन :-

➢ हर्बि शैंपू का एक रंगीन और आकषबक विज्ञापन र्नाइए।

Holiday Homework of Maths IX

• Make a project file in which you have to write

about the great mathematicians, their life

history, their achievements and contribution

towards the mathematics. ( Minimum 10 pages)

• Do chapter 1 and 2 and extra questions of RS

Agarwal in maths notebook.

ECONOMICS

CLASS- 9TH

CHAPTER.1

The Story of

Village Palampur

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Q.1 MODERN FARMING METHODS REQUIRE MORE INPUTS

WHICH ARE MANUFACTURED IN INDUSTRY. DO YOU

AGREE?

Modern farming methods involve the use of

high-yielding variety seeds. These seeds require

a combination of chemical fertilisers and

pesticides, agricultural implements like tractors,

and proper irrigation facilities like electric tube

wells to produce the best results. All these

elements are manufactured in industries. Hence,

it would be right to say that modern farming

methods make use of a greater number of

industrial outputs as compared to traditional

farming methods.

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Q.2. HOW DID THE SPREAD OF ELECTRICITY

HELP FARMERS IN PALAMPUR?

The spread of electricity has helped the farmers

of Palampur village in the following ways :

Most of the houses have electric connections.

Electricity is used to run tubewells in the fields.

Electricity is used in various types of small

business.

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Q.3. IS IT IMPORTANT TO INCREASE THE AREA

UNDER IRRIGATION? WHY?

India is an agricultural country. Nearly two-

thirds of the people are dependent on farming for

their livelihood. But of the total cultivated area

in the country, a little less than 40 per cent is

irrigated even today. In the remaining areas,

farming is largely dependent on rainfall which is

irregular and uncertain. Modern farming

methods cannot be used in the absence of

assured adequate water supplies. India cannot

achieve the goal of selfsufficiency in food grains

unless the area under irrigation is increased.

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Q.4. CONSTRUCT A TABLE ON THE DISTRIBUTION

OF LAND AMONG THE 450 FAMILIES OF PALAMPUR.

Number of families Land (Hectare)

150 0

240 Less than 2

60 More than 2

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Q.5. WHY ARE THE WAGES FOR FARM LABOURERS

IN PALAMPUR LESS THAN MINIMUM WAGES?

Farm workers at Palampur village get lower

wages than the minimum wages fixed by the

government. The minimum wages for a farm

labourer is fixed at Rs 115 per day. But farm

labourers get only Rs. 70 – 80. This happens

because of heavy competition for work among

the farm labourers at Palampur village.

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Q.6. WHAT ARE THE DIFFERENT WAYS OF

INCREASING PRODUCTION ON THE SAME PIECE OF

LAND? USE EXAMPLES TO EXPLAIN.

The different ways of increasing production on the same piece of land

are:

Multiple Cropping: It is the most common way of increasing production

on a given piece of land. Under it, more than one crop is grown on the

same piece of land during the year. Indian farmers should grow at least

two main crops in a year. In India, some farmers are growing a third

crop also over the past 20 years.

Modern Farming Methods: Production on the same piece of land can

also be increased by adopting modern farming methods. The Green

Revolution in India is a remarkable example of it.

Under modern farming, more cultivable areas should be brought under

HYV seeds and irrigation. The use of simple wooden plough must be

replaced by tractors. The increasing use of farm machinery like tractors,

threshers, harvesters, etc. make cultivation faster.

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Q.7. : DESCRIBE THE WORK OF A FARMER

WITH 1 HECTARE OF LAND.

A farmer with 1 hectare of land shall put under

the category of small farmer. Most of the work

would be done by the farmer and his family

members. The farmer will normally use a pair of

bullocks to plough the field. His family members

would assist him in sowing the seeds. During

harvest time, he may require to hire some

labourers.

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Q.8. HOW DO THE MEDIUM AND LARGE FARMERS

OBTAIN CAPITAL FOR FARMING? HOW IS IT

DIFFERENT FROM THE SMALL FARMERS?

Medium and large farmers usually have

surplus cash by selling their farm produce.

Since they have land and house, they

easily get loan from banks. Small farmers,

on the other hand, may not be able to get

bank loans. They have to depend on the

local merchant and moneylender for loan.

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Q.9. ON WHAT TERMS DID SAVITA GET A LOAN FROM

TAJPAL SINGH? WOULD SAVITA’S CONDITION BE

DIFFERENT IF SHE COULD GET A LOAN FROM THE BANK

AT A LOW RATE OF INTEREST?

Savita required money for buying seeds, fertilisers and

pesticides, and water for irrigation. She also needed money for repairing her farm instruments. So, she decided to borrow money from Tejpal Singh, a large farmer in her village. Tejpal Singh agreed to give the loan of Rs. 3000 at an interest rate of 24 per cent for four months. He also got her to agree to work on his field during the harvest season for Rs. 35 a day. Savita’s condition would have been better if she could get a loan from the bank. The bank would have provided her the loan at a low rate of interest. Moreover, Savita could have devoted more time on her own field instead of working for Tejpal Singh as farm labourer.

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Q.10. WHAT CAN BE DONE SO THAT MORE NON-

FARM PRODUCTION ACTIVITIES CAN BE STARTED IN

VILLAGES?

Three things that need to be done to encourage non-

farm production activities in villages:

The government should set up schemes whereby

landless labourers and small farmers are able to get

cheap loans to start small individual/community

businesses.

In addition to financial assistance, the government

should set up rural workshops to enable the villagers

to build on their skill levels.

The government should also work towards improving

the infrastructure of villages so that the rural parts of

the country are well connected to the urban areas.

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Q.11. WHAT ARE THE NON-FARM PRODUCTION

ACTIVITIES TAKING PLACE IN YOUR REGION ? MAKE A

SHORT LIST.

Dairy

Small-scale Industries

The shopkeepers

Transport

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CHAPTER.2 (PEOPLE AS A RESOURCE)

‘People as Resource’ is a way of referring to a country’s

working people in term of their existing productive skills and

abilities. Human resource is an asset for the economy rather

than a liability. Population becomes human capital when there

is investment made in the form of education, training and

medical care. In fact, human capital is the stock of skill and

productive knowledge embodied in them.

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Q.1. WHAT DO YOU UNDERSTAND BY ‘PEOPLE AS A

RESOURCE’ ?

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Q.2. HOW IS HUMAN RESOURCE DIFFERENT FROM

OTHER RESOURCES LIKE AND PHYSICAL CAPITAL ?

Human capital is in one-way superior to other resources

like land and physical capital human resource can make

use of land and physical capital. Land and physical

capital cannot become useful on its own.

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Q.3. WHAT IS THE ROLE OF EDUCATION IN

HUMAN CAPITAL FORMATION ?

Educated people find jobs in private firms while the

uneducated people continue with the same work as their

parents. They earn a meagre income like their parents, which

is just enough to support a family. Several years of education

adds to the quality of labour. This enhances their total

productivity. Total productivity adds to the growth of the

economy. This in turns pays an individual through salary or

in some other form of his choice. It is a known fact that with

investments made on education and health, one can yield a

high return in the future in the form of higher earnings and

greater contribution to society.

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Q.4. WHAT IS THE ROLE OF HEALTH IN HUMAN

CAPITAL FORMATION ?

The health of a person helps him to realise his potential

and the ability to fight illness. An unhealthy person

becomes a liability for an organisation. Health is an

indispensable basis for realising one’s well being.

Henceforth, improvement in the health status of the

population has been the priority of the country. Our

national policy, too, aimed at improving the accessibility

of healthcare, family welfare and nutritional service

with special focus on underprivileged segment of

population.

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Q.5. WHAT PART DOES HEALTH PLAY IN THE

INDIVIDUAL’S WORKING LIFE ?

Health plays a vital role in an individual’s working life,

since no firm would be induced to employ people who

might not work efficiently as healthy workers because

of ill health and not only that, people who are physically

or mentally ill cannot work.

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Q.6. WHAT ARE THE VARIOUS ACTIVITIES

UNDERTAKEN IN THE PRIMARY SECTOR, SECONDARY

SECTOR AND TERTIARY SECTOR ?

The various activities have been classified into three

main sector i.e., Primary, secondary and tertiary.

Primary sector includes agriculture, forestry, animal

husbandry, fishing, poultry farming and mining.

Quarrying and manufacturing is included in the

secondary sector. Trade, transport, communication,

banking, education, health, tourism, services, insurance

etc, are included in the tertiary sector.

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Q.7. WHAT IS THE DIFFERENCE BETWEEN ECONOMIC

ACTIVITIES AND NON-ECONOMIC ACTIVITIES ?

The activities in the third sector result in the production of goods

and services. Activities, which are not performed to earn money

but to get some satisfaction, are called non-economic activities.

These activities add value to the national income. These activities

are called economic activities. These activities are performed to

discharge social obligation or for physical fitness or for recreation.

Economic activities have two parts- market activities and non-

market activities. Market activities involve remuneration to any

one who performs.

People visiting places of worship, providing relief to the victims

of flood and earthquake, engaging in sports activities, gardening,

listening to radio or watching television are example of non-

economics activities. Non-Market activities are the production for

self-consumption

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Q.8. WHY ARE WOMEN EMPLOYED IN LOW PAID

WORK ?

Women are paid for their work when they enter the

labour market. Their earning, like that of their male

counterpart, is determined on the basis of education

and skill. A majority of the women have meagre

education and low skill formation and hence women are

paid low compared to men. Most women work where

job security is not there.

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Q.9. HOW WILL YOU EXPLAIN THE TERM

UNEMPLOYMENT?

Unemployment is said to exist when people who

are willing to work at the going wages but

cannot find jobs.

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Q.10. WHAT IS THE DIFFERENCE BETWEEN DISGUISED

UNEMPLOYMENT AND SEASONAL UNEMPLOYMENT ?

In case of disguised unemployment people appear to be

employed. Seasonal unemployment happens when

people are not able to find jobs during some months of

the year. They have agricultural plot where they find

work. This usually happens among family members

engaged in agricultural activity. People dependent upon

agriculture usually face such kind of problem. The work

requires the service of five people but engages eight

people. There are certain busy seasons when sowing,

harvesting, weeding, threshing is done. Three people

are extra. These three people also work in the same plot

as five people.

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The contribution made by the three extra people are

removed the productivity of the field will not decline.

The field requires the service of five people and the

three extra people are disguisedly employed. Certain

months do not provide much work to the people

dependent on agriculture.

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Q.11.WHY IS EDUCATED UNEMPLOYED, A

PECULIAR PROBLEM OF INDIA ?

In the case of India educated unemployment has

become a common phenomenon. Many youth with

matriculation, graduation and post graduation degrees

are not able to find jobs. A study shows that

unemployment of graduate and post-graduate has

increased faster than among matriculates. A paradoxical

manpower situation is witnessed as surplus of

manpower in certain categories coexist with shortage

of manpower in others.

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Q.12. IN WHICH FIELD DO YOU THINK INDIA CAN

BUILD THE MAXIMUM EMPLOYMENT OPPORTUNITY ?

Sriperambathur, Nanganneri, Koodangulam, etc. are some

of the villages which did not have job opportunities earlier

but later came up.

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Q.13. CAN YOU IMAGINE SOME VILLAGE WHICH INITIALLY HAD NO JOB OPPORTUNITIES BUT LATER CAME UP WITH MANY ?

Since agriculture is the backbone of India, India can

build maximum employment opportunity in agriculture

based industries.

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Q.14. WHICH CAPITAL WOULD YOU CONSIDER THE

BEST-LAND, LABOUR, PHYSICAL CAPITAL AND HUMAN

CAPITAL ? WHY ?

The capital I consider the best is Human Capital

because there are countries like Japan that have invested

inn human resources as they did not have any natural

resource. These countries are developed and rich

countries. They import the natural resources needed in

their country. They have invested on people especially in

the field of education and health. These people have

made efficient use of other resource like land and

capital. Efficiency and the technology evolved by people

have made these countries rich and developed.

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HOLIDAY HOMEWORKSUBJECT – PHYSICSACTIVITY PLAN FOR THE CHAPTER : MOTION