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If a body travels in a straight line and covers an equal interval of time , it is said to have uniform motion .In simple words , a body is said to have uniform acceleration if the rate of change of its velocity remains constant .
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Table of Contents
DISTANCE DISPLACEMENT UNIFORM MOTION QUESTIONS
1. A body is moving along a straight line path with constant velocity At an instant of time the distance travelled by it in S and its displacement is D, then
(a) D < S (b) D > S
(c) D = S (d) D ≤ S
2. The location of a particle has changed What can we say about the displacement and the distance covered by the particle?
(a) Neither can be zero (b) One may be zero
(c) Both may be zero (d) One is + ve, ether is – ve
3. The displacement of a body is zero. The distance covered
(a) is zero
(b) is not re
(c) may or may not be zero
(d) depends upon the acceleration
4. In 1.0s a particle goes from point A to point B, moving in a semicircle of radius 1.0m (see Figure). The magnitude of the average velocity is
5. The numerical ratio of displacement to distance for a moving object is
(a) always less than 1
(b) always equal to 1
(c) always more than 1
(d) equal to or less than 1
6. Which of the following can be res, when a particle is in motion for some time?
(a) Distance
(b) Displacement
(c) Speed
(d) None of these
7. If distance covered by a particle is zero, what can you say about its displacement?
(a) It may or may not be zero
(b) It cannot be zero
(c) It is negative
(d) It must be zero
8. Which of the following is a one dimensional motion
(a) Motion of snake
(b) Motion of air particle
(c) Motion of satellite
(d) Motion of train running on a straight track
(a) Both P and Q move with mom equal speed
(b) is accelerated Q is retarded
(c) Both P and Q move with uniform speeds but the speed of P is more than the speed of Q
(d) Both P and Q move with uniform speeds but the speed of Q is more than the speed of P
Non-Uniform Motion
11. What determines the nature of the path followed by the particle?
(a) Speed (b) Velocity
(c) Acceleration (d) Both (b) and (c)
12. The graph between displacement and time for a particle moving with uniform acceleration is a/an
(a) straight line with a positive slope
(b) parabola
(c) ellipse
(d) straight line parallel to time axis
13. The acceleration of a moving body can be found from
(a) area under velocity-time graph
(b) area under distance-time graph
(c) slope of the velocity-time graph
(d) slope of distance-time graph
14. Acceleration of a particle changes when
(a) direction of velocity changes
(b) magnitude of velocity changes
(c) speed changes
(d) Both (a) and (b)
15. The area under acceleration time graph gives
(a) distance travelled
(b) change in acceleration
(c) force acting
(d) change in velocity
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16. The incorrect statement(s) from the following is/are
I. A body having zero velocity will not necessarily have zero acceleration
II. A body having zero velocity will necessarily have zero acceleration
III. A body having uniform speed can have only uniform acceleration
IV.A body having non-uniform velocity will have zero acceleration
(a) II, III and IV (b) I and II
(c) II and III (d) IV only
17. Which of the following is the correct expression of instantaneous acceleration?
18. If a body travels with constant acceleration, which of the following quantities remains constant?
(a) Displacement (b) Velocity
(c) Time (d) None of these
19. Velocity time curve for a body projected vertically
(a) parabola (b) ellipse
(c) hyperbola (d) straight line
20. A bus starts moving with acceleration 2 m/s2 A cyclist 96 m behind the bus starts simultaneously towards the bus at 20 m/s. After what time will he be able to overtake the bus?
(a) 40 sec (b) 8 sec
(c) 18 sec (d) 16 sec
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Relative Motion in One Dimension
21. A train of 150 m length is going towards north direction at a speed of 10 ms-1. A parrot flies at a speed of 5 ms-1 towards south direction parallel to the railway track. The time taken by the parrot to cross the train is equal to
(a) 12s (b) 8s
(c) 15s (d) 10 s
22. A boat takes 2 hours to travel 8 km and back in still water lake With water velocity of 4 km h-1, the time taken for going upstream of 8 km and coming back is
(a) 160 minutes (b) 80 minutes
(c) 100 minutes (d) 120 minutes
23. A car is moving on a road and rain is falling vertically Select the correct answer.
(a) The rain will strike the back screen only
(b) The rain will strike the front screen only
(c) The rain will strike both the screens
(d) The rain will not strike any of the screens
24. If a boat can travel with a speed of v in still water, which of the following trips will take the least amount of time?
(a) travelling a distance of 2d in still water
(b) travelling a distance of 2d across (perpendicular to) the current in a stream
(c) travelling a distance d downstream and returning a distance d upstream
(d) travelling a distance d upstream and returning a distance d downstream
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Motion Under Gravity
26. A body is thrown vertically upwards If air resistance is to be taken into account, then the time during which the body rises is
(a) equal to the time of fall
(b) less than the time of fall
(c) greater than the time of fall
(d) twice the time of fall
27. A body is thrown upwards and reaches half of its maximum height At that position
(a) its acceleration is minimum
(b) its velocity is maximum
(c) its velocity is zero
(d) its acceleration is constant
28. Velocity-time curve for a body projected vertically upwards is
(a) parabola
(b) ellipse
(c) hyperbola
(d) straight line
29. An object accelerated downward under the influence of force of gravity. The motion of object is said to be
(a) uniform motion
(b) free fall
(c) non uniformly accelerated motion
(d) None of these
30. Free fall of an object (in vacuum) is a case of motion with
(a) uniform velocity
(b) uniform acceleration
(c) variable acceleration
(d) constant momentum
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Answer key
1. C 2. A 3. C 4. B 5. D 6. B 7. D 8. D 9. B 10. C 11. D 12. B 13. C 14. C 15. D | 16. A 17. B 18. D 19. D 20. B 21. D 22. A 23. B 24. A 25. D 26. B 27. D 28. D 29. B 30. B |
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ALSO VISIT :SIMPLE HARMONIC MOTION MCQ CLASS 11
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