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2. Which of the following figures represent uniform motion of a moving object correctly?
A. (b)
B. (d)
C. (c)
D. (a)
3. In a distance-time graph, if the line is horizontal, then the object is:
A. Accelerating
B. Speeding up
C. At rest
D. Slowing down
5. On the distance-time graph, the Y-axis should be labelled as:
A. Distance
B. Displacement
C. Speed
D. Time
6. The motion represented by the displacement-time graph below is:
A. Uniform-motion with zero initial displacement.
B. Non-uniform motion with finite value of initial displacement.
C. Non-uniform motion with zero initial displacement.
D. Uniform-motion with finite value of initial displacement.
7. The slope of the distance-time graph is:
A. Distance
B. acceleration
C. Speed
D. Displacement
8. For a body performing motion with uniform speed, the distance-time graph is:
A. Straight line parallel to y-axis
B. Straight line inclined to the time axis
C. Straight line parallel to x-axis
D. Curved line
14. What is the slope of distance-time graph when object is at rest?
A. Decreases continuously
B. Zero
C. Increases continuously
D. One
20. Assertion : When the displacement of a body is directly proportional to the square of the time. Then the body is moving with uniform acceleration. Reason : The slope of the velocity-time graph with a time axis gives acceleration.
A. a.) Both Assertion and Reason are correct, and reason is the correct explanation for assertion.
B. b.) Both Assertion and Reason are correct, and Reason is not the correct explanation for Assertion.
C. c.) Assertion is true but Reason is false.
D. d.) Assertion is false but Reason is true.
21. Assertion: The accelerated motion of an object may be due to change in magnitude of velocity or direction or both of them. Reason: Acceleration can be produced only by change in magnitude of the velocity. It does not depend the direction.
A. a.) Both Assertion and Reason are correct, and reason is the correct explanation for assertion.
B. b.) Both Assertion and Reason are correct, and Reason is not the correct explanation for Assertion.
C. c.) Assertion is true but Reason is false.
D. d.) Assertion is false but Reason is true.
22. Assertion-we all experience sunrise and sunset every day. Reason-Mars is moving around the sun.
A. a.) Both Assertion and Reason are correct, and reason is the correct explanation for assertion.
B. b.) Both Assertion and Reason are correct, and Reason is not the correct explanation for Assertion.
C. c.) Assertion is true but Reason is false.
D. d.) Assertion is false but Reason is true.
23. Assertion- To specify the speed of an object we required its magnitude. Reason-magnitude is the scalar quantity.
A. a.) Both Assertion and Reason are correct, and reason is the correct explanation for assertion.
B. b.) Both Assertion and Reason are correct, and Reason is not the correct explanation for Assertion.
C. c.) Assertion is true but Reason is false.
D. d.) Assertion is false but Reason is true.
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