31. If an object covers an uneven distance in the same time interval, it is called . . . . . . . .
32. The rate of change of momentum of an object is proportional to the applied unbalanced force in the direction of the force. This rule is known as:
33. Second law of motion is related to . . . . . . . .
34. Assertion (A) The speedometer of an automobile measure the average speed of the automobile.
Reason (R) Average velocity is equal to total displacement per total time taken.
Reason (R) Average velocity is equal to total displacement per total time taken.
35. Which of the following pairs always have the same direction?
36. If the position of object changes with respect to its surroundings in a given time. The object is said to be in
37. An iron sphere of mass 30 kg has the same diameter as an aluminium sphere of mass is 10.5 kg. Both spheres are dropped simultaneously from a tower. When they are 10m above from the ground, they have the same-
38. The rate of change of velocity is called?
39. A car undergoes a uniform circular motion. The acceleration of the car is
40. Which of the following is an example of inertia of rest?
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