Motion in a Straight Line Mock Test – Class 11 Physics

1. A straight-line graph has a constant negative slope. The motion represented is

2. A graph lies below the time axis but slopes upward toward the axis. The body is

3. A car moving with uniform acceleration covers in the second and in the second. What is its acceleration?

4. A curved graph becomes flatter as time increases, but its slope remains positive. The motion is best described as

5. The limiting definition of instantaneous acceleration is

6. A position function is , where is in and is in . The tangent to its graph is horizontal at

7. A body has velocity , where is in and is in . The distance travelled from to is

8. A motion starts with and has uniform acceleration . The displacement during the second is

9. A body thrown upward from a tower has , , and impact time . The velocity just before hitting the ground is

10. A traveller moves for equal time intervals: for and for . Why does the average speed equal the arithmetic mean of the two speeds in this case?

11. A student writes the following line in a notebook: “Since , the body must be moving left.” What is the flaw in this reasoning?

12. A train of length crosses a platform of length with speed . The time taken to completely cross the platform is

13. In the equation , a dimensional check of the term gives

14. A ball is thrown vertically upward with . Taking upward as positive and , the time taken to reach the highest point is

15. A straight graph slopes downward and remains above the time axis for the interval shown. The acceleration is

16. A body moving along a straight line has and at an instant. What happens to its speed just after that instant?

17. A velocity-time graph has the following straight-line parts.

The displacement from to is

18. A body starts from rest and has uniform acceleration . The ratio of displacements in the , , and seconds is

19. In one-dimensional motion, a positive velocity means that the body is

20. A body starts from rest. Its acceleration-time graph is a triangle above the time axis with base and height . The final velocity is

21. A stone is dropped from rest from a height of . Taking downward as positive and , the time taken to reach the ground is

22. The distance travelled by a moving body can never be negative because it is

23. Two cars move toward each other on a straight road. Their speeds are and , and they are initially apart. The time taken to meet is

24. Study the table for two bodies moving along the same line.

What happens to the relative velocity as time passes?

25. Equality between distance travelled and magnitude of displacement is possible when a body

26. A car moving at brakes uniformly with acceleration for . Its displacement during braking is

27. A passenger in a train moving east at sees another train moving west relative to him at . Taking east as positive, the velocity of the other train relative to the ground is

28. Consider the following statements.
Statement I: Average speed is always non-negative.
Statement II: Average velocity can be negative in one-dimensional motion.
Statement III: Average velocity uses total distance as its numerator.

29. Two trains of lengths and move in opposite directions with speeds and . The complete crossing time is

30. A runner stays in one straight lane while moving from one end of the track to the other. What makes the motion suitable for description by a single coordinate ?

31. A student says, “The area under an acceleration-time graph gives displacement because acceleration is related to motion.” The precise correction is that the area under an graph gives

32. Consider the following statements about a one-dimensional coordinate system.
Statement I: The origin fixes the point from which position is measured.
Statement II: The positive direction fixes the sign convention on the line.
Statement III: A negative coordinate always means the object is moving backward.

33. Instantaneous velocity describes the velocity of a body

34. In a non-uniform motion record, why may the average velocity over a long interval fail to describe the velocity at a particular instant?

35. A graph is a straight line with equation , where is in and is in . At what time does the body reverse direction?

36. A body has average speed and average velocity during a time interval. This combination means that the body

37. A body has initial velocity . Its acceleration-time graph is a horizontal line at from to . The final velocity is

38. Use the graph description below.

The displacement for the whole interval is

39. A particle has , with in and in . Its instantaneous acceleration at is

40. A body moves with , and body moves with . What is the separation between them?

41. A trolley has the following position record.

What does the table show?

42. Two cars move in opposite directions on a straight road. Car moves east at , and car moves west at . Taking east as positive, the velocity of relative to is

43. A displacement of along a chosen -axis means that

44. A particle moves with and uniform acceleration . Its displacement in is

45. Two particles move along the -axis with and , where is in and is in . The position where the particles meet is

46. Use the graph description below.

The velocity represented by the graph is

47. For the position function , where is in and is in , the acceleration at is

48. A student claims, “At the highest point of vertical motion, both velocity and acceleration are zero.” The correct correction is that

49. A uniformly accelerated body starts from rest. It covers in the first . How much distance will it cover in the first ?

50. A position graph is described as follows.

What are the distance travelled and displacement?