Question

extra question of ch motion class 9 ncert

Answer 1

Here are the Extra question of chapter motion:-

1. What is the definition of balanced and unbalanced force?
2. When the brakes are applied to the bike the back seater  moves forward why?
3. Two balls of the same size but of different materials, rubber and iron are kept on the smooth floor of a moving train. The brakes are applied suddenly to stop the train. Will the balls start rolling? If so, in which direction? Will they move with the same speed? Give reasons for your answer
4. What Is Inertia
5. Write a short note on third law of motion
6. How a karate player can break a pile of tiles with a single blow of his hand?
7.A train accelerates from 36 km/h to 54 km/h in 10 sec. 
(i) Acceleration 
(ii) The distance travelled by car.
8. A scooter travelling at 10 m/s speed up to 20 m/s in 4 sec. Find the acceleration of train. 
9. The maximum speed of a train is 90 km/h. It takes 10 hours to cover a distance of 500 km. Find the ratio of its average speed to maximum speed?
10.  What does the odometer of an automobile measure?

Hope this helps u..

Answer 2

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