9th Class Science Time and Motion Question Bank 9th CBSE Science Motion

  • question_answer
    State three equations of motion. Which of them describes (i) velocity-time relation? (ii) position-time relation?

    Answer:

                    For a body moving along a straight line at velocity u and accelerating uniformly at a for time t to attain a velocity v and cover displacement s. First equation v = u + at Second equation \[s=ut+\frac{1}{2}a{{t}^{2}}\] Third equation \[{{\upsilon }^{2}}={{u}^{2}}+2as\]                            (i) First equation represents velocity-time relation. (ii) Second  equation   represents  position-time relation.


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