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Class 9 Science Chapter 8 Motion Quiz 3 (25 MCQs)

Quiz Instructions

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1. Speed has a direction.
2. The Standard Units for Speed is?
3. A ball is thrown vertically upwards. It rises to a height of 40 m and comes back to the thrower:
4. If a body goes from A to B with a velocity of 20 m/s and comes back from B to A with a velocity of 30 m/s, what is the average velocity of the body during the whole journey?
5. A description of the speed and direction of an object's motion
6. The nature of s-t graph for rest-
7. How is displacement different from distance?
8. A measurement of how fast an object is moving
9. Suppose a boy is enjoying a ride on a merry-go-round which is moving with a constant speed of 10 ms-1 It implies that the boy is .....
10. Calculate the speed of a sprinter who ran 200 meters in 20 seconds.
11. If a bus decreases its speed from 80 km/h to 60m/h, then its retardation is
12. If a body starts from rest, what can be said about the acceleration of body?
13. The slope in distance time graph gives us
14. An object is in motion if it changes position relative to
15. If the displacement of an object is proportional to square of time, then the object moves with .....
16. A farmer moves along the boundary of a square field of side 10m in 40 s. What will be the magnitude of displacement of the farmer at the end of 2 minutes 20 seconds from his initial position?
17. The ratio of speed to the magnitude of velocity when the body is moving in one direction is .....
18. A car accelerates uniformly from 18 km/hr to 36 km/hr in 5 s. Calculate the distance covered by the car.
19. What is the unit for distance?
20. Kanha leaves for his school from his house at 9:00 am and returns home at 11:00 am. Find its average speed and average velocity for the entire journey. The school is 2 km away from Kanha's house.
21. Which of the following is most likely not a case of uniform circular motion?
22. A body is thrown vertically upward with velocity u, the greatest height h to which it will rise is .....
23. A stone is thrown in a vertically upward direction with a velocity of 5 m/s. If the acceleration of the stone during its motion is 10 m/s2 in the down direction, what will be the height attained by the stone and how much time will it take to reach there?
24. Example of Uniform Motion
25. What is the unit for velocity?
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