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Class 9 Science Chapter 8 Motion Quiz 2 (25 MCQs)

Quiz Instructions

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1. Rate of change of velocity is called-
2. Displacement and distance are always the same number.
3. Which of the following has INCORRECT units?
4. SI Unit of measurement of acceleration is
5. Area under a v-t graph represents a physical quantity which has the unit
6. A scooterist covers a distance of 3 kilometres in 5 minutes. Calculate his speed in m/s
7. The process of changing distance or position from another object
8. A car travels 5 km towards north than turns right and travels 3km further, the car again turns right and travel 1 km and comes to rest. What is the distance travelled and displacement of the car? (a) Distance:5km and Displacement:9km (b) Distance:9km and Displacement:5km (c) Distance:9km and Displacement:7km (d) Distance:7km and Displacement:9km
9. A bus starting from rest moves with uniform acceleration of 0.1 m/s$^{2}$ for 2 minutes. The distance covered by the bus is
10. S = ut + 1/2 at$^{2}$. Here S means .....
11. Angular velocity (w) and linear velocity (v) of a body moving in a circle of radius (r) are related as:
12. Straight line overlapping time axis on v-t graph shows-
13. Three different objects m$_{1}$, m$_{2}$ and m$_{3}$ are allowed to fall from rest and from the same point O along three different frictionless paths. The speeds of the three objects, on reaching the ground, will be in the ratio of
14. What is slope of v-t graph called?
15. What does slope of position time graph give?
16. Calculate the speed of a dog running through a field if he is covering 23.7 meters in 54 seconds.
17. How long will your trip take (in hours) if you travel 350 km at an average speed of 80 km/hr?
18. The numerical ratio of distance to displacement is always
19. Vector quantities need both a magnitude and a .....
20. Distance is a ..... quantity
21. The SI unit for acceleration is
22. A cyclist riding a bicycle at a constant speed of 10 m/ s on a circular track. The cyclist completes the three rounds of a track in 6 minutes. What is the radius of the circular track? (a) 191 m (b) 573 m (c) 1200 m (d) 3600 m
23. A car starts from rest at a stop light and reaches 20 m/s in 3.5 s. Determine the acceleration of the car.
24. Uniform circular motion which quantity is uniform
25. A ball is rolled at a velocity of 12 m/sec. After 36 seconds, it comes to a stop. What is the acceleration of the ball?
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