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Class 9 Science Chapter 8 Motion Quiz 4 (25 MCQs)

Quiz Instructions

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1. A student completes his journey from his house to school with an average speed of 5m/ s in 10 minutes. If the student travels with the speed of 5 m/ s in first 4 minutes. What will be its speed in next 6 minutes?
2. A change in position of an object.
3. The S.I. unit of acceleration is:
4. Acceleration occurs when an object changes its speed or .....
5. What does the area enclosed by the velocity-time graph indicate?
6. An object may have .....
7. A person walks 50 meters directly north, stops, and then travels 32 meters directly south. What is their displacement?
8. Displacement is represented by-
9. The area under a velocity-time graph represents the .....
10. A quantity that has both magnitude and direction is called a scalar quantity.
11. The distance covered by a car moving at a speed of 36 km/hour in 10 minutes is:
12. An example of a body moving with constant speed but still accelerating is .....
13. In a free fall the velocity of a stone is increasing equally in equal intervals of time under the effect of gravitational force of the earth. Then what can you say about the motion of this stone? Whether the stone is having:
14. What is the process of changing position?
15. Acceleration of an object happens when things .....
16. A particle moving in a straight line covers half the distance with speed of 3 m/s. The other half of the distance is covered in two equal time intervals with speed of 4.5 m/s and 7.5 m/s respectively. The average speed of the particle during this motion is
17. A boy walks 10m in straight path moving away from a lamp pole in a garden and walks5m back on the same path.What is the displacement of the boy from the lamp pole?
18. Hi! I am important thing for vehicles ..... without me nobody can measure their speed. I have a stick between me which always disturbs my view to world. Do you know I changed to digital India. Can you guess who am I?
19. What is the total length of how far you traveled?
20. A car is travelling at a speed of 90 km/h. Brakes are applied so as to produce a uniform acceleration of-0.5 m/s$^{2}$. Find how far the car will go before it is brought to rest?
21. Speed of an object is equal to the magnitude of velocity if-
22. If a moving body comes to rest, then its acceleration is-
23. A car travels 240 km in 2 hours and a sprinter travels 100 m in 9.5 sec. Who is traveling faster?
24. The total path of length travelled by a body in a given interval of time is called .....
25. A complete description of motion includes a reference point, your displacement, and your direction.
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