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9th CBSE
IMPORTANT
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Velocity is a vector quantity.

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Important Questions on Motion

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9th CBSE
IMPORTANT
Physics>Chapter 1 - Motion>PERIODIC TEST>Q (c)

The displacement of a body moving along the OX axis from left to right is negative. 

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9th CBSE
IMPORTANT
Physics>Chapter 1 - Motion>PERIODIC TEST>Q (d)
When a moving body makes a round trip and returns back to its initial position, its displacement is zero. 
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9th CBSE
IMPORTANT
Physics>Chapter 1 - Motion>PERIODIC TEST>Q (e)
A rubber ball dropped from a certain height is an example of nonuniform motion. 
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9th CBSE
IMPORTANT
Physics>Chapter 1 - Motion>PERIODIC TEST>Q (f)
When a body moves in a straight line in a particular direction its acceleration is due to a change in its speed. 
EASY
9th CBSE
IMPORTANT
Physics>Chapter 1 - Motion>PERIODIC TEST>Q (g)
The unit of acceleration is metre per second. 
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9th CBSE
IMPORTANT
Physics>Chapter 1 - Motion>PERIODIC TEST>Q (h)
Distance-time and displacement-time graphs for a body under all conditions are identical. 
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9th CBSE
IMPORTANT
Physics>Chapter 1 - Motion>PERIODIC TEST>Q (i)
The speed of a body at rest is equal to the slope of its distance-time graph. 
MEDIUM
9th CBSE
IMPORTANT
Physics>Chapter 1 - Motion>PERIODIC TEST>Q (j)
For circular motion, Linear velocity=Angular velocity×Radius of the circle