11. Consider the following velocity and time graph.
Which one of the following is the value of average acceleration from 8 s' to 12 s?
Which one of the following is the value of average acceleration from 8 s' to 12 s?
12. The stock of books lying on the table does not move due to . . . . . . . .
13. What will be the acceleration produced when a force of 21 N is applied on an object of mass 3 kg?
14. When a stationary bus starts moving, the people standing in it fall in the back direction. Which of the following law explains this situation?
15. What was the year of publication of Newton's laws of motion?
16. Two persons are holding a rope of negligible mass horizontally. A 20 kg mass is attached to the rope at the mid-point, as a result, the rope deviates from the horizontal direction. The tension required to completely straighten the rope is (g = 10 m/s2)
17. Which one of the following statements is not correct?
18. In which of the following cases of motions, the distance and displacement are equal?
19. Which one of the following has maximum inertia?
20. In the given Velocity (v) versus Time (t ) graph, accelerated and decelerated motions are respectively represented by line segments.
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