Class 9 Motion Important Questions

   Class 9 Motion Important Questions 

1.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 or less than 1

2. if the displacement of an object is proportional to square of time,        then the object moves with

         a) uniform velocity                  

        b) uniform acceleration

        c) increasing acceleration         

        d) decreasing acceleration

3. Which of the following situations is possible?

        a) An object can have acceleration, but constant velocity.

        b) The velocity of an object may be zero but acceleration is not zero.

        c) Distance and the magnitude of displacement are equal in      circular motion.

        d) Average speed and the magnitude of average velocity are   always equal in circular motion

4.The ratio of speed to the magnitude of velocity when the body is    moving in one direction is

        a) Less than one
        b) Greater than one
        c) Equal to one
        d) Greater than or equal to one

 5. From the given υ – t graph, it can be inferred that the object is

        a) in uniform motion                               

        b) at rest

        c) in non-uniform motion                      

        d) moving with uniform acceleration

6. Slope of a velocity-time graph gives

        a) the distance                        

        b) the displacement

        c) the acceleration                   

        d) the speed

7. A boy goes from A to B with a velocity of 20 m/min and comes      back from B to A with a velocity of 30 m/min. The average      velocity of the boy during the whole journey is

      a) 24 m/min                        

       b) 25 m/s                

      c) Zero           

     d) 20 m/min

 

8. What t is motion

9.What is uniform motion

10. What is non uniform motion

11. What is average velocity

12. Distinguish between speed and velocity

13.What is acceleration?

14.What is equation motion?

15.What is Uniform circular motion?

16.Draw a graphical method and name of the graph

                    Velocity  2,4,6,8,10

                    Time   3,5,7,9,11

17. Draw a graphical method and name of the graph

        Acceleration   10, 15,20, 30,45

        Time   2,4,5,6,8,12