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APEEJAY SCHOOL, SHEIKH SARAI-I

HOLIDAY HOMEWORK – 2015

CLASS – IX

ENGLISH

1. Design a word grid or web chart on words/ vocabulary related to events like elections, marriage, professions,

antonyms, synonyms, foreign words commonly used in English language.

Make an attractive chart based on any one topic of your choice. Remember to make it colourful and bright

using your creativity and incorporating illustrations wherever possible!

2. Read and relish the story about the hypochondriac friends who set out on an amusing journey in

'The Three Men in a Boat' by Jerome K Jerome. Read the first fourteen chapters which you will really enjoy!

3. Complete exercises given in the Integrated Grammar Practice in your Workbook as far as possible as it will give

you good practice in different areas of English grammar!

Cheer Up! Enjoy and relax too!

PHYSICS

1. Define the term displacement. Is it a vector quantity or a scalar quantity?

2. Define the term distance. Is it a vector quantity or a scalar quantity?

3. The displacement of a body can never be greater than the distance covered by a body. Is the statement

true or false?

4. Can a body have zero velocity and still acceleration? Give example.

5. What is the nature of distance time graph for uniform motion of an object?

6. What is the acceleration of a freely falling body?

7. What is the acceleration of a body moving with uniform velocity?

8. What does the slope of a distance-time graph give?

9. What does the area of a velocity-time graph give?

10. Give two examples of vector quantities.

11. An object is moving up an inclined plane. Its velocity changes from 15m/s to 10m/s in two seconds.

What is its acceleration? (ans. -2.5m/s2)

12. A body covered a distance of x meters along a semicircular path. Calculate the magnitude of

displacement of the body, and the ratio of distance to displacement?

13. A particle moving with an initial velocity of 5m/s is subjected to a uniform acceleration of -2.5m/s

Find the displacement in the next 4 sec. (ans. 0)

14. A car covers 30km at a uniform speed of 30km/hr. what should be its speed for the next 90km if the

average speed for the entire journey is 60km/h? (ans. 90km/hr)

15. A person goes to market, makes purchases and comes back at a constant slower speed. Draw

displacement -time and velocity time graphs of the person?

16. A boy runs for 10 min. at a uniform speed of 9km/h. At what speed should he run for the next 20 min. so

that the average speed comes 12km/hr? (ans.13.5km/h)

17. A particle was at rest from 9 a.m. It moved at a uniform speed 10km/hr from 9.30 a.m. to10 a.m. Find

the average speed between (a) 9.00 a.m. and 10.00 a.m., (b) 9.15 a.m. and 10.00 a.m. (ans. 5km/h,

6.67km/h)

18. An insect moves along a circular path of radius 10 cm with constant speed. If it takes 1 min. to move

from a point on the path to the diametrically opposite point, find (a) the distance covered, (b) the speed, (c)

Holiday Homework For Languages And Sciences - Ix Class, Apeejay School, Sheikh Sarai-I, 2015