**Class 9 - Ch8 - Motion****Fill in the blanks**

*1*. If the position of an object does not change with time, it is said to be at _____.

*2*. Rest and Motion are ___________ (absolute/relative) terms

*3*. The study of motion without taking into account the cause of motion is called ______ (kinematics/dynamics).

*4*. An object is said to be at ________ (rest/motion), if it changes its position with respect to its surroundings in a given time

*5*. Distance is the length of ______(actual/shortest) path traveled by a body in a given time.

*6*. Displacement is the ______ (actual/shortest) path covered by a moving object from the initial point of reference in a specified direction.

*7*. Distance is a _______ (scalar/vector) physical quantity while displacement is a _______ (scalar/vector) physical quantity.

*8*. When a body moves unequal distances in equal intervals of time, then the body is said to describe ___________ (uniform/non-uniform) motion.

*9*. In uniform motion, speed of an object is ________ (constant/not constant).

*10*. SI unit of velocity is _____ (metre per second/ km per hour/ miles per hour).

*11*. The rate of change of velocity of a moving body with time is called ______.

*12*. Slope of position-time graph ________ (is zero/may be zero/ cannot be zero) if the object is at rest.

*13*. Slope of the distance-time graph gives the _____ (speed/acceleration) of the object.

*14*. The nature of distance-time graph is a _______ (straight line/curve) having ______ (uniform/varying) slope when the object has non-uniform motion.

*15*. The slope of the velocity-time graph gives ______ (displacement/acceleration).

*16*. An object is under free fall. Considering upward as positive direction, the displacement of the object during a short time interval is positive during ______ (ascent/descent) and negative during _____ (ascent/descent).

*17*. In a uniform circular motion, velocity of a particle is _____ (constant/not constant) but its speed is ______ (constant/not constant).

☛ Ch8 Motion (Q & A )

☛ Ch8 Motion (MCQs)

Answers:

1. rest.

2. relative

3. kinematics

4. motion

5. actual

6. shortest

7. scalar, vector

8. non-uniform

9. constant

10. metre per second

11. acceleration

12. is zero.

13. speed

14. curve, varying

15. acceleration

16. ascent, descent

17. not constant, constant

it was nice n helped a lot............................ bt 3rd question was not dere in d ncert book

ReplyDeleteit's not necessary that questions come straight from book

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